diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 90b8773f418..21e778c3eb4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+Fri Jul 17 11:48:55 1998  Jeffrey A Law  (law@cygnus.com)
+
+	* mn10300.c (MODES_TIEABLE_P): Fix typo.
+
 Fri Jul 17 03:26:12 1998  Rihcard Earnshaw (rearnsha@arm.com)
 
 	* tree.c (valid_machine_attribute): Only create a new type variant if
diff --git a/gcc/config/mn10300/mn10300.h b/gcc/config/mn10300/mn10300.h
index eea94a2d244..938561cff36 100644
--- a/gcc/config/mn10300/mn10300.h
+++ b/gcc/config/mn10300/mn10300.h
@@ -182,7 +182,7 @@ extern struct rtx_def *zero_areg;
    If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
    for any hard reg, then this must be 0 for correct output.  */
 #define MODES_TIEABLE_P(MODE1, MODE2) \
-  (MODE1 == MODE2 || GET_MODE_SIZE (MODE1) <= 4 && GET_MODE_SIZE (MODE2) <= 4)
+  (MODE1 == MODE2 || (GET_MODE_SIZE (MODE1) <= 4 && GET_MODE_SIZE (MODE2) <= 4))
 
 /* 4 data, and effectively 3 address registers is small as far as I'm
    concerned.  */