diff --git a/src/include/mt32emu/config.h b/src/include/mt32emu/config.h
index 906c23d56..a7e31bd8d 100644
--- a/src/include/mt32emu/config.h
+++ b/src/include/mt32emu/config.h
@@ -42,4 +42,4 @@
 #define MT32EMU_WITH_INTERNAL_RESAMPLER 1
 
 
-#endif
+#endif /* #ifndef MT32EMU_CONFIG_H */