diff --git a/libavcodec/truespeech_data.h b/libavcodec/truespeech_data.h
index 73b94dbdd5..1ee75dc128 100644
--- a/libavcodec/truespeech_data.h
+++ b/libavcodec/truespeech_data.h
@@ -19,8 +19,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef __TRUESPEECH_DATA__
-#define __TRUESPEECH_DATA__
+#ifndef TRUESPEECH_DATA_H
+#define TRUESPEECH_DATA_H
 
 #include <stdint.h>
 
@@ -156,4 +156,4 @@ static const int16_t ts_5E2[8] =
 static const int16_t ts_5F2[8] =
     { 0x6000, 0x4800, 0x3600, 0x2880, 0x1E60, 0x16C8, 0x1116, 0x0CD1 };
 
-#endif
+#endif /* TRUESPEECH_DATA_H */