diff --git a/Source/control.cpp b/Source/control.cpp
index a719541c7..39f1fdf07 100644
--- a/Source/control.cpp
+++ b/Source/control.cpp
@@ -258,8 +258,8 @@ void DrawSpellList()
 
 	pSpell = SPL_INVALID;
 	infostr[0] = '\0';
-	x = 636;
-	y = 495;
+	x = 636 + PANEL_LEFT;
+	y = 495 + HEIGHT_DIFF;
 	ClearPanel();
 	for (i = 0; i < 4; i++) {
 		switch ((spell_type)i) {
@@ -362,16 +362,16 @@ void DrawSpellList()
 				}
 			}
 			x -= 56;
-			if (x == 20) {
+			if (x == 20 + PANEL_LEFT) {
 				y -= 56;
-				x = 636;
+				x = 636 + PANEL_LEFT;
 			}
 		}
-		if (mask != 0 && x != 636)
+		if (mask != 0 && x != 636 + PANEL_LEFT)
 			x -= 56;
-		if (x == 20) {
+		if (x == 20 + PANEL_LEFT) {
 			y -= 56;
-			x = 636;
+			x = 636 + PANEL_LEFT;
 		}
 	}
 }
@@ -804,10 +804,10 @@ void DoSpeedBook()
 	int xo, yo, X, Y, i, j;
 
 	spselflag = 1;
-	xo = 636;
-	yo = 495;
-	X = 600;
-	Y = 307;
+	xo = 636 + PANEL_LEFT;
+	yo = 495 + HEIGHT_DIFF;
+	X = 600 + PANEL_LEFT;
+	Y = 307 + HEIGHT_DIFF;
 	if (plr[myplr]._pRSpell != SPL_INVALID) {
 		for (i = 0; i < 4; i++) {
 			switch (i) {
@@ -832,17 +832,17 @@ void DoSpeedBook()
 						Y = yo - 188;
 					}
 					xo -= 56;
-					if (xo == 20) {
-						xo = 636;
+					if (xo == 20 + PANEL_LEFT) {
+						xo = 636 + PANEL_LEFT;
 						yo -= 56;
 					}
 				}
 				spell <<= (__int64)1;
 			}
-			if (spells && xo != 636)
+			if (spells && xo != 636 + PANEL_LEFT)
 				xo -= 56;
-			if (xo == 20) {
-				xo = 636;
+			if (xo == 20 + PANEL_LEFT) {
+				xo = 636 + PANEL_LEFT;
 				yo -= 56;
 			}
 		}
diff --git a/Source/cursor.cpp b/Source/cursor.cpp
index 827315e0f..69655c4dc 100644
--- a/Source/cursor.cpp
+++ b/Source/cursor.cpp
@@ -292,7 +292,7 @@ void CheckCursMove()
 	if (sbookflag && MouseX > RIGHT_PANEL && MouseY <= SPANEL_HEIGHT) {
 		return;
 	}
-	if ((chrflag || questlog) && MouseX < RIGHT_PANEL) {
+	if ((chrflag || questlog) && MouseX < 320 && MouseY <= SPANEL_HEIGHT) {
 		return;
 	}
 
diff --git a/Source/player.cpp b/Source/player.cpp
index d172c6154..4cdd25750 100644
--- a/Source/player.cpp
+++ b/Source/player.cpp
@@ -3688,8 +3688,8 @@ void CheckPlrSpell()
 	}
 
 	if (pcurs != CURSOR_HAND
-	    || MouseY >= PANEL_TOP
-	    || (chrflag && MouseX < 320 || invflag && MouseX > RIGHT_PANEL)
+	    || (MouseY >= PANEL_TOP && MouseX >= PANEL_LEFT && MouseX <= RIGHT_PANEL) // allows casting spells through the sides of the main panel if it doesn't cover the whole screen
+	    || ((chrflag || questlog) && MouseX < 320 && MouseY < SPANEL_HEIGHT) || (invflag && MouseX > RIGHT_PANEL && MouseY < SPANEL_HEIGHT) // allows casting spells below the side panels
 	        && rspell != SPL_HEAL
 	        && rspell != SPL_IDENTIFY
 	        && rspell != SPL_REPAIR
diff --git a/defs.h b/defs.h
index 1a134dc5b..cf81411bc 100644
--- a/defs.h
+++ b/defs.h
@@ -113,6 +113,7 @@
 
 #define SCREEN_X		BORDER_LEFT
 #define SCREEN_Y		BORDER_TOP
+#define HEIGHT_DIFF		(SCREEN_HEIGHT - 480)
 
 #define BUFFER_WIDTH	(BORDER_LEFT + SCREEN_WIDTH + BORDER_RIGHT)
 #define BUFFER_HEIGHT	(BORDER_TOP + SCREEN_HEIGHT + BORDER_BOTTOM)