diff --git a/source/audiolib/src/formats.cpp b/source/audiolib/src/formats.cpp
index 82705a4b6..355a0dbd9 100644
--- a/source/audiolib/src/formats.cpp
+++ b/source/audiolib/src/formats.cpp
@@ -31,7 +31,7 @@
 
 static playbackstatus MV_GetNextWAVBlock(VoiceNode *voice)
 {
-    if (voice->BlockLength <= 0)
+    if (voice->BlockLength == 0)
     {
         if (voice->LoopStart == NULL)
         {