diff --git a/source/build/src/engine.cpp b/source/build/src/engine.cpp
index 59f6b9edf..75dd93d97 100644
--- a/source/build/src/engine.cpp
+++ b/source/build/src/engine.cpp
@@ -447,7 +447,7 @@ int32_t animateoffs(int const tilenum, int fakevar)
     if (animnum <= 0)
         return 0;
 
-    int const i = (int) totalclocklock >> (picanm[tilenum].sf & PICANM_ANIMSPEED_MASK);
+    int const i = (int) I_GetBuildTime() >> (picanm[tilenum].sf & PICANM_ANIMSPEED_MASK);
     int offs = 0;
 
     switch (picanm[tilenum].sf & PICANM_ANIMTYPE_MASK)