diff --git a/reactos/base/applications/sndrec32/audio_def.hpp b/reactos/base/applications/sndrec32/audio_def.hpp
index 32ff48ee865..95b6f43a1f9 100644
--- a/reactos/base/applications/sndrec32/audio_def.hpp
+++ b/reactos/base/applications/sndrec32/audio_def.hpp
@@ -51,7 +51,7 @@
 #include <windows.h>
 #include <mmsystem.h> //Windows MultiMedia (WINMM) audio apis
 #include <mmreg.h> //codecs stuff
-#include <Msacm.h> //codecs stuff
+#include <msacm.h> //codecs stuff