diff --git a/src/win32/OpenAL.cpp b/src/win32/OpenAL.cpp
index 9444f062..d3f726cc 100644
--- a/src/win32/OpenAL.cpp
+++ b/src/win32/OpenAL.cpp
@@ -38,7 +38,7 @@
 #include <assert.h>
 
 
-#define NBUFFERS 8
+#define NBUFFERS 5
 //#define LOGALL
 // LOGALL writes very detailed informations to vba-trace.log
 
@@ -282,6 +282,11 @@ void OpenAL::write()
 		ALFunction.alGetSourcei( source, AL_BUFFERS_PROCESSED, &nBuffersProcessed );
 		assert( AL_NO_ERROR == ALFunction.alGetError() );
 
+		if( nBuffersProcessed == NBUFFERS ) {
+			static int i = 0;
+			log( "OpenAL: Buffers were not refilled fast enough (%i)\n", i++ );
+		}
+
 		if( !speedup && synchronize && !theApp.throttle ) {
 			// wait until at least one buffer has finished
 			while( nBuffersProcessed == 0 ) {