diff --git a/libaf/af_format.c b/libaf/af_format.c
index 4a1b43fc34..fdac68147e 100644
--- a/libaf/af_format.c
+++ b/libaf/af_format.c
@@ -43,8 +43,8 @@ long int lrintf(float);
 
 /* The below includes retrieves functions for converting to and from
    ulaw and alaw */ 
-#include "af_format_ulaw.c"
-#include "af_format_alaw.c"
+#include "af_format_ulaw.h"
+#include "af_format_alaw.h"
 
 // Switch endianness
 static void endian(void* in, void* out, int len, int bps);
diff --git a/libaf/af_format_alaw.c b/libaf/af_format_alaw.h
similarity index 99%
rename from libaf/af_format_alaw.c
rename to libaf/af_format_alaw.h
index 61a3efa8e7..bddf1a5374 100644
--- a/libaf/af_format_alaw.c
+++ b/libaf/af_format_alaw.h
@@ -21,8 +21,8 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#ifndef MPLAYER_AF_FORMAT_ALAW_C
-#define MPLAYER_AF_FORMAT_ALAW_C
+#ifndef MPLAYER_AF_FORMAT_ALAW_H
+#define MPLAYER_AF_FORMAT_ALAW_H
 
 #include <inttypes.h>
 
@@ -321,4 +321,4 @@ static int to_alaw(void* in, void* out, int len, int bps, int format)
   }
   return AF_OK;
 }
-#endif /* MPLAYER_AF_FORMAT_ALAW_C */
+#endif /* MPLAYER_AF_FORMAT_ALAW_H */
diff --git a/libaf/af_format_ulaw.c b/libaf/af_format_ulaw.h
similarity index 99%
rename from libaf/af_format_ulaw.c
rename to libaf/af_format_ulaw.h
index 53492e852a..ecf521398c 100644
--- a/libaf/af_format_ulaw.c
+++ b/libaf/af_format_ulaw.h
@@ -21,8 +21,8 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#ifndef MPLAYER_AF_FORMAT_ULAW_C
-#define MPLAYER_AF_FORMAT_ULAW_C
+#ifndef MPLAYER_AF_FORMAT_ULAW_H
+#define MPLAYER_AF_FORMAT_ULAW_H
 
 #include <inttypes.h>
 
@@ -834,4 +834,4 @@ static int to_ulaw(void* in, void* out, int len, int bps, int format)
   return AF_OK;
 }
 
-#endif /* MPLAYER_AF_FORMAT_ULAW_C */
+#endif /* MPLAYER_AF_FORMAT_ULAW_H */