diff --git a/src/cpu/simple/noncaching.hh b/src/cpu/simple/noncaching.hh
index 775aa21551..654a17805a 100644
--- a/src/cpu/simple/noncaching.hh
+++ b/src/cpu/simple/noncaching.hh
@@ -38,7 +38,7 @@
  */
 
 #ifndef __CPU_SIMPLE_NONCACHING_HH__
-#define __CPU_SIMPLE_NONCACHING_HH___
+#define __CPU_SIMPLE_NONCACHING_HH__
 
 #include "cpu/simple/atomic.hh"
 #include "params/NonCachingSimpleCPU.hh"