diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e2622a440b73..2e7f9f58481a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,7 @@
 2011-02-01  DJ Delorie  <dj@redhat.com>
 
+	* config/m32c/m32c.h (PTRDIFF_TYPE): Remove extra definition.
+
 	* config/m32c/m32c.c (m32c_regno_reg_class): Return smallest reg
 	class for A0/A1.
 
diff --git a/gcc/config/m32c/m32c.h b/gcc/config/m32c/m32c.h
index a953ee33a3e6..5c6970ac22a7 100644
--- a/gcc/config/m32c/m32c.h
+++ b/gcc/config/m32c/m32c.h
@@ -200,9 +200,6 @@ machine_function;
 #undef  SIZE_TYPE
 #define SIZE_TYPE "unsigned int"
 
-#undef  PTRDIFF_TYPE
-#define PTRDIFF_TYPE "int"
-
 #undef  WCHAR_TYPE
 #define WCHAR_TYPE "long int"