diff --git a/Source/gendung.h b/Source/gendung.h
index 1cd240605..07f5a9dc5 100644
--- a/Source/gendung.h
+++ b/Source/gendung.h
@@ -22,11 +22,6 @@ extern BYTE *pDungeonCels;
 extern BYTE *pSpeedCels;
 extern int SpeedFrameTbl[128][16];
 extern char block_lvid[MAXTILES + 1];
-extern int level_frame_count[MAXTILES];
-extern int tile_defs[MAXTILES];
-extern WORD level_frame_types[MAXTILES];
-extern int level_frame_sizes[MAXTILES];
-extern int nlevel_frames;
 extern BOOLEAN nBlockTable[MAXTILES + 1];
 extern BOOLEAN nSolidTable[MAXTILES + 1];
 extern BOOLEAN nTransTable[MAXTILES + 1];
@@ -72,9 +67,7 @@ extern int themeCount;
 extern THEME_LOC themeLoc[MAXTHEMES];
 
 void FillSolidBlockTbls();
-void MakeSpeedCels();
 int IsometricCoord(int x, int y);
-void SetSpeedCels();
 void SetDungeonMicros();
 void DRLG_InitTrans();
 void DRLG_MRectTrans(int x1, int y1, int x2, int y2);
@@ -85,8 +78,6 @@ void DRLG_AreaTrans(int num, BYTE *List);
 void DRLG_InitSetPC();
 void DRLG_SetPC();
 void Make_SetPC(int x, int y, int w, int h);
-BOOL DRLG_WillThemeRoomFit(int floor, int x, int y, int minSize, int maxSize, int *width, int *height);
-void DRLG_CreateThemeRoom(int themeIndex);
 void DRLG_PlaceThemeRooms(int minSize, int maxSize, int floor, int freq, int rndSize);
 void DRLG_HoldThemeRooms();
 BOOL SkipThemeRoom(int x, int y);