diff --git a/Source/automap.cpp b/Source/automap.cpp
index 94224c6a1..24953eb63 100644
--- a/Source/automap.cpp
+++ b/Source/automap.cpp
@@ -248,7 +248,6 @@ void DrawAutomap()
 	DrawAutomapGame();
 }
 // 4B8968: using guessed type int sbookflag;
-// 69BD04: using guessed type int questlog;
 // 69CF0C: using guessed type int gpBufEnd;
 
 void DrawAutomapType(int sx, int sy, WORD automap_type)
diff --git a/Source/control.cpp b/Source/control.cpp
index da53b7015..a612c7b9f 100644
--- a/Source/control.cpp
+++ b/Source/control.cpp
@@ -1559,7 +1559,7 @@ void CheckBtnUp()
 				if (MouseY >= PanBtnPos[i][1] && MouseY <= PanBtnPos[i][1] + PanBtnPos[i][3]) {
 					switch (i) {
 					case PANBTN_CHARINFO:
-						questlog = 0;
+						questlog = FALSE;
 						chrflag = chrflag == 0;
 						break;
 					case PANBTN_QLOG:
@@ -1567,7 +1567,7 @@ void CheckBtnUp()
 						if (!questlog)
 							StartQuestlog();
 						else
-							questlog = 0;
+							questlog = FALSE;
 						break;
 					case PANBTN_AUTOMAP:
 						DoAutoMap();
@@ -1618,7 +1618,6 @@ void CheckBtnUp()
 // 4B8968: using guessed type int sbookflag;
 // 4B8C90: using guessed type int panbtndown;
 // 646D00: using guessed type char qtextflag;
-// 69BD04: using guessed type int questlog;
 
 void FreeControlPan()
 {
@@ -2316,7 +2315,6 @@ void DrawDurIcon()
 	}
 }
 // 4B8968: using guessed type int sbookflag;
-// 69BD04: using guessed type int questlog;
 
 int DrawDurIcon4Item(ItemStruct *pItem, int x, int c)
 {
diff --git a/Source/cursor.cpp b/Source/cursor.cpp
index dd032bb6a..88df6b891 100644
--- a/Source/cursor.cpp
+++ b/Source/cursor.cpp
@@ -691,4 +691,3 @@ void CheckCursMove()
 // 4B8CCC: using guessed type int dword_4B8CCC;
 // 52569C: using guessed type int zoomflag;
 // 52575C: using guessed type int doomflag;
-// 69BD04: using guessed type int questlog;
diff --git a/Source/diablo.cpp b/Source/diablo.cpp
index 0d4e7e248..1edb8d671 100644
--- a/Source/diablo.cpp
+++ b/Source/diablo.cpp
@@ -822,7 +822,6 @@ BOOL LeftMouseDown(int wParam)
 // 525740: using guessed type int PauseMode;
 // 52575C: using guessed type int doomflag;
 // 646D00: using guessed type char qtextflag;
-// 69BD04: using guessed type int questlog;
 // 6AA705: using guessed type char stextflag;
 
 BOOL LeftMouseCmd(BOOL bShift)
@@ -1085,7 +1084,7 @@ void PressKey(int vkey)
 				qtextflag = 0;
 				sfx_stop();
 			}
-			questlog = 0;
+			questlog = FALSE;
 			automapflag = 0;
 			msgdelay = 0;
 			gamemenu_off();
@@ -1203,7 +1202,7 @@ void PressKey(int vkey)
 			qtextflag = 0;
 			sfx_stop();
 		}
-		questlog = 0;
+		questlog = FALSE;
 		automapflag = 0;
 		msgdelay = 0;
 		gamemenu_off();
@@ -1216,7 +1215,6 @@ void PressKey(int vkey)
 // 525740: using guessed type int PauseMode;
 // 52B9F0: using guessed type char msgdelay;
 // 646D00: using guessed type char qtextflag;
-// 69BD04: using guessed type int questlog;
 // 6AA705: using guessed type char stextflag;
 
 void diablo_pause_game()
@@ -1285,7 +1283,7 @@ void PressChar(int vkey)
 	case 'C':
 	case 'c':
 		if(!stextflag) {
-			questlog = 0;
+			questlog = FALSE;
 			chrflag = chrflag == 0;
 			if(!chrflag || invflag) {
 				if(MouseX > 160 && MouseY < 352) {
@@ -1305,7 +1303,7 @@ void PressChar(int vkey)
 			if(!questlog) {
 				StartQuestlog();
 			} else {
-				questlog = 0;
+				questlog = FALSE;
 			}
 		}
 		break;
@@ -1505,7 +1503,6 @@ void PressChar(int vkey)
 // 52569C: using guessed type int zoomflag;
 // 525740: using guessed type int PauseMode;
 // 52575C: using guessed type int doomflag;
-// 69BD04: using guessed type int questlog;
 // 6AA705: using guessed type char stextflag;
 
 void LoadLvlGFX()
diff --git a/Source/items.cpp b/Source/items.cpp
index 0c4e9ca67..1a664616f 100644
--- a/Source/items.cpp
+++ b/Source/items.cpp
@@ -3777,7 +3777,6 @@ void DrawUniqueInfo()
 		}
 	}
 }
-// 69BD04: using guessed type int questlog;
 
 void PrintItemMisc(ItemStruct *x)
 {
diff --git a/Source/minitext.cpp b/Source/minitext.cpp
index 93a519552..c76201309 100644
--- a/Source/minitext.cpp
+++ b/Source/minitext.cpp
@@ -65,7 +65,7 @@ void InitQuestText()
 void InitQTextMsg(int m)
 {
 	if (alltext[m].scrlltxt) {
-		questlog = 0;
+		questlog = FALSE;
 		qtextptr = alltext[m].txtstr;
 		qtextflag = TRUE;
 		qtexty = 500;
@@ -80,7 +80,6 @@ void InitQTextMsg(int m)
 // 646D00: using guessed type char qtextflag;
 // 646D04: using guessed type int scrolltexty;
 // 646D08: using guessed type int sgLastScroll;
-// 69BD04: using guessed type int questlog;
 
 void DrawQTextBack()
 {
diff --git a/Source/quests.cpp b/Source/quests.cpp
index 92fee6000..d272c2230 100644
--- a/Source/quests.cpp
+++ b/Source/quests.cpp
@@ -3,7 +3,7 @@
 #include "../types.h"
 
 int qtopline; // idb
-int questlog; // weak
+BOOL questlog;
 void *pQLogCel;
 QuestStruct quests[MAXQUESTS];
 int qline; // weak
@@ -70,7 +70,7 @@ void InitQuests()
 	}
 
 	initiatedQuests = 0;
-	questlog = 0;
+	questlog = FALSE;
 	ALLQUESTS = 1;
 	WaterDone = 0;
 
@@ -127,7 +127,6 @@ void InitQuests()
 		quests[QTYPE_VB]._qvar1 = 2;
 }
 // 679660: using guessed type char gbMaxPlayers;
-// 69BD04: using guessed type int questlog;
 // 69BE90: using guessed type int qline;
 
 void CheckQuests()
@@ -860,34 +859,25 @@ void DrawQuestLog()
 
 void StartQuestlog()
 {
-	signed int v0;   // eax
-	int v1;          // edx
-	unsigned int v2; // ecx
-	int v3;          // ecx
+	unsigned int i;
 
-	v0 = 0;
-	v1 = 0;
 	numqlines = 0;
-	v2 = 0;
-	do {
-		if (quests[v2]._qactive == 2 && quests[v2]._qlog)
-			qlist[v0++] = v1;
-		++v2;
-		++v1;
-	} while (v2 < MAXQUESTS);
-	numqlines = v0;
-	if (v0 <= 5)
-		v3 = 8;
-	else
-		v3 = 5 - (v0 >> 1);
-	qtopline = v3;
+	for (i = 0; i < MAXQUESTS; i++) {
+		if (quests[i]._qactive == 2 && quests[i]._qlog) {
+			qlist[numqlines++] = i;
+		}
+	}
+	if (numqlines > 5) {
+		qtopline = 5 - (numqlines >> 1);
+	} else {
+		qtopline = 8;
+	}
 	qline = 22;
-	if (v0)
-		qline = v3;
-	questlog = 1;
+	if (numqlines != 0)
+		qline = qtopline;
+	questlog = TRUE;
 	ALLQUESTS = 1;
 }
-// 69BD04: using guessed type int questlog;
 // 69BE90: using guessed type int qline;
 // 69BED4: using guessed type int numqlines;
 
@@ -928,9 +918,8 @@ void QuestlogEnter()
 	PlaySFX(IS_TITLSLCT);
 	if (numqlines && qline != 22)
 		InitQTextMsg((unsigned char)quests[qlist[(qline - qtopline) >> 1]]._qmsg);
-	questlog = 0;
+	questlog = FALSE;
 }
-// 69BD04: using guessed type int questlog;
 // 69BE90: using guessed type int qline;
 // 69BED4: using guessed type int numqlines;
 
diff --git a/Source/quests.h b/Source/quests.h
index 24605af23..da8967c64 100644
--- a/Source/quests.h
+++ b/Source/quests.h
@@ -3,7 +3,7 @@
 #define __QUESTS_H__
 
 extern int qtopline; // idb
-extern int questlog; // weak
+extern BOOL questlog;
 extern void *pQLogCel;
 extern QuestStruct quests[MAXQUESTS];
 extern int qline; // weak
diff --git a/Source/scrollrt.cpp b/Source/scrollrt.cpp
index 9a891364d..69d85e8da 100644
--- a/Source/scrollrt.cpp
+++ b/Source/scrollrt.cpp
@@ -431,7 +431,6 @@ void DrawView(int StartX, int StartY)
 // 525740: using guessed type int PauseMode;
 // 52B9F1: using guessed type char msgflag;
 // 646D00: using guessed type char qtextflag;
-// 69BD04: using guessed type int questlog;
 
 void DrawGame(int x, int y)
 {
@@ -539,7 +538,6 @@ void DrawGame(int x, int y)
 // 5C2FFC: using guessed type int dword_5C2FFC;
 // 5C3000: using guessed type int scr_pix_width;
 // 5C3004: using guessed type int scr_pix_height;
-// 69BD04: using guessed type int questlog;
 // 69CF0C: using guessed type int gpBufEnd;
 // 69CF20: using guessed type char arch_draw_type;
 
@@ -2192,7 +2190,6 @@ void DrawZoom(int x, int y)
 // 5C2FFC: using guessed type int dword_5C2FFC;
 // 5C3000: using guessed type int scr_pix_width;
 // 5C3004: using guessed type int scr_pix_height;
-// 69BD04: using guessed type int questlog;
 // 69CF0C: using guessed type int gpBufEnd;
 // 69CF20: using guessed type char arch_draw_type;
 
diff --git a/Source/stores.cpp b/Source/stores.cpp
index 7a720b63d..dab2e1c8e 100644
--- a/Source/stores.cpp
+++ b/Source/stores.cpp
@@ -1784,7 +1784,7 @@ void StartStore(char s)
 		sbookflag = 0;
 		invflag = 0;
 		chrflag = 0;
-		questlog = 0;
+		questlog = FALSE;
 		dropGoldFlag = FALSE;
 		ClearSText(0, 24);
 		ReleaseStoreBtn();
@@ -1876,7 +1876,6 @@ void StartStore(char s)
 	}
 }
 // 4B8968: using guessed type int sbookflag;
-// 69BD04: using guessed type int questlog;
 // 69F10C: using guessed type int storenumh;
 // 6A8A28: using guessed type int stextsel;
 // 6AA705: using guessed type char stextflag;
diff --git a/Source/town.cpp b/Source/town.cpp
index 81f0a2596..333774541 100644
--- a/Source/town.cpp
+++ b/Source/town.cpp
@@ -826,7 +826,6 @@ void T_DrawGame(int x, int y)
 // 5C2FFC: using guessed type int dword_5C2FFC;
 // 5C3000: using guessed type int scr_pix_width;
 // 5C3004: using guessed type int scr_pix_height;
-// 69BD04: using guessed type int questlog;
 // 69CF0C: using guessed type int gpBufEnd;
 
 void T_DrawZoom(int x, int y)
@@ -1001,7 +1000,6 @@ void T_DrawZoom(int x, int y)
 // 5C2FFC: using guessed type int dword_5C2FFC;
 // 5C3000: using guessed type int scr_pix_width;
 // 5C3004: using guessed type int scr_pix_height;
-// 69BD04: using guessed type int questlog;
 // 69CF0C: using guessed type int gpBufEnd;
 
 void T_DrawView(int StartX, int StartY)
@@ -1056,7 +1054,6 @@ void T_DrawView(int StartX, int StartY)
 // 525740: using guessed type int PauseMode;
 // 52B9F1: using guessed type char msgflag;
 // 646D00: using guessed type char qtextflag;
-// 69BD04: using guessed type int questlog;
 // 69BEF8: using guessed type int light_table_index;
 // 69CF94: using guessed type int cel_transparency_active;
 // 6AA705: using guessed type char stextflag;