diff --git a/source/games/duke/src/2d_r.cpp b/source/games/duke/src/2d_r.cpp
index 25d52ac8a..c59c28bb6 100644
--- a/source/games/duke/src/2d_r.cpp
+++ b/source/games/duke/src/2d_r.cpp
@@ -385,9 +385,9 @@ public:
 		if (currentLevel->flags & MI_USERMAP)
 			gfx_offset = BONUSPIC01;
 		else if (!isRRRA())
-			gfx_offset = BONUSPIC01 + clamp((currentLevel->levelNumber / 100) * 7 + (currentLevel->levelNumber % 100), 0, 13);
+			gfx_offset = BONUSPIC01 + clamp((currentLevel->levelNumber / 1000) * 7 + (currentLevel->levelNumber % 1000), 0, 13);
 		else
-			gfx_offset = LEVELMAP01 + clamp((currentLevel->levelNumber / 100) * 7 + (currentLevel->levelNumber % 100), 0, 13);
+			gfx_offset = LEVELMAP01 + clamp((currentLevel->levelNumber / 1000) * 7 + (currentLevel->levelNumber % 1000), 0, 13);
 		
 
 		lastmapname = currentLevel->DisplayName();