diff --git a/source/src/audiomanager.cpp b/source/src/audiomanager.cpp
index e9f0c8af..7fe21a14 100644
--- a/source/src/audiomanager.cpp
+++ b/source/src/audiomanager.cpp
@@ -1009,7 +1009,7 @@ void sortmapsoundslots(char **args, int numargs)
         tempslots.last().oldslot.add(i);
         tempslots.last().used = false;
     }
-    loopv(ents) if(ents[i].type == SOUND) tempslots[ents[i].attr1 & 255].used = true;
+    loopv(ents) if(ents[i].type == SOUND && tempslots.inrange(ents[i].attr1)) tempslots[ents[i].attr1].used = true;
     tempslots.sort(tempmssort);
 
     // remove double entries
diff --git a/source/src/rendermodel.cpp b/source/src/rendermodel.cpp
index 9a382125..9501777f 100644
--- a/source/src/rendermodel.cpp
+++ b/source/src/rendermodel.cpp
@@ -255,7 +255,7 @@ void sortmapmodelslots(char **args, int numargs)
         tempslots.last().oldslot.add(i);
         tempslots.last().used = false;
     }
-    loopv(ents) if(ents[i].type == MAPMODEL) tempslots[ents[i].attr2].used = true;
+    loopv(ents) if(ents[i].type == MAPMODEL && tempslots.inrange(ents[i].attr2)) tempslots[ents[i].attr2].used = true;
     tempslots.sort(tempmmsort);
 
     // remove double entries