diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 226e2efd2ca..cc093dd0132 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,7 @@
 2000-04-30  Benjamin Kosnik  <bkoz@gnu.org>
 
+	* config/cpu/powerpc/bits/atomicity.h (__compare_and_swap): Fix typo.
+
 	* mknumeric_limits (trait_name): Fix copyright notice.
 	* src/gen-num-limits.cc: Explicitly instantiate epsilon and
 	round_error data members of struct value. This works around
diff --git a/libstdc++-v3/config/cpu/powerpc/bits/atomicity.h b/libstdc++-v3/config/cpu/powerpc/bits/atomicity.h
index 02b5e60fcf6..7e7c1767cc9 100644
--- a/libstdc++-v3/config/cpu/powerpc/bits/atomicity.h
+++ b/libstdc++-v3/config/cpu/powerpc/bits/atomicity.h
@@ -57,7 +57,7 @@ __atomic_add (volatile _Atomic_word *__mem, int __val)
 
 static __ATOMICITY_INLINE int
 __attribute__ ((unused))
-__compare_and_swap (volatile long *p, long int __oldval, long int __newval)
+__compare_and_swap (volatile long *__p, long int __oldval, long int __newval)
 {
   int __result;
   __asm__ ("\