diff --git a/src/s_sound.h b/src/s_sound.h
index 541a507010..5bfc790db6 100644
--- a/src/s_sound.h
+++ b/src/s_sound.h
@@ -23,10 +23,10 @@
 
 #include "doomtype.h"
 #include "i_soundinternal.h"
-#include "dobject.h"
 
 class AActor;
 class FScanner;
+class FSerializer;
 
 //
 // SoundFX struct.