--- a/libavcodec/ppc/dsputil_altivec.h
+++ b/libavcodec/ppc/dsputil_altivec.h
@@ -20,8 +20,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef DSPUTIL_ALTIVEC_H
-#define DSPUTIL_ALTIVEC_H
+#ifndef FFMPEG_DSPUTIL_ALTIVEC_H
+#define FFMPEG_DSPUTIL_ALTIVEC_H
 
 #include "dsputil_ppc.h"
 
@@ -31,4 +31,4 @@
 
 void avg_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h);
 
-#endif /* DSPUTIL_ALTIVEC_H */
+#endif /* FFMPEG_DSPUTIL_ALTIVEC_H */