diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4e1a2e15287..da75e251859 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2006-04-18  DJ Delorie  <dj@redhat.com>
+
+	* config/m32c/m32c.h (PTRDIFF_TYPE): Define.
+
 2006-04-18  Devang Patel  <dpatel@apple.com>
 
 	* doc/invoke.texi (-Wuninitialized): Clarify -O connection.
diff --git a/gcc/config/m32c/m32c.h b/gcc/config/m32c/m32c.h
index 5eb2aaecf2c..1b1d357c2b7 100644
--- a/gcc/config/m32c/m32c.h
+++ b/gcc/config/m32c/m32c.h
@@ -171,6 +171,9 @@ machine_function;
 
 #define DEFAULT_SIGNED_CHAR 1
 
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE (TARGET_A16 ? "int" : "long int")
+
 /* REGISTER USAGE */
 
 /* Register Basics */