diff --git a/src/zr/soundeffects/ambientsounds.inc b/src/zr/soundeffects/ambientsounds.inc
index b0a645f..25f246a 100644
--- a/src/zr/soundeffects/ambientsounds.inc
+++ b/src/zr/soundeffects/ambientsounds.inc
@@ -185,7 +185,7 @@ AmbientSoundsRestart()
     if (tAmbientSounds != INVALID_HANDLE)
     {
         KillTimer(tAmbientSounds);
-        tAmbientSounds == INVALID_HANDLE;
+        tAmbientSounds = INVALID_HANDLE;
     }
     
     // If ambience is disabled, then stop.