diff --git a/src/util/mesa-sha1.h b/src/util/mesa-sha1.h
index a81aba96e94..d3f7affecee 100644
--- a/src/util/mesa-sha1.h
+++ b/src/util/mesa-sha1.h
@@ -20,8 +20,8 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
-#ifndef SHA1_H
-#define SHA1_H
+#ifndef MESA_SHA1_H
+#define MESA_SHA1_H
 
 #include <stdlib.h>
 #include "sha1/sha1.h"