diff --git a/cf/wflags.m4 b/cf/wflags.m4
index 875036c06..c4c0ce0c1 100644
--- a/cf/wflags.m4
+++ b/cf/wflags.m4
@@ -4,18 +4,18 @@ dnl set WFLAGS
 
 AC_DEFUN(AC_WFLAGS,[
 WFLAGS_NOUNUSED=""
-WFLAGS_NORETURNTYPE=""
+WFLAGS_NOIMPLICITINT=""
 if test -z "$WFLAGS" -a "$GCC" = "yes"; then
-  # -Wno-return-type for broken X11 headers
+  # -Wno-implicit-int for broken X11 headers
   # leave these out for now:
   #   -Wcast-align doesn't work well on alpha osf/1
   #   -Wmissing-prototypes -Wpointer-arith -Wbad-function-cast
   #   -Wmissing-declarations -Wnested-externs
   WFLAGS="ifelse($#, 0,-Wall, $1)"
   WFLAGS_NOUNUSED="-Wno-unused"
-  WFLAGS_NORETURNTYPE="-Wno-return-type"
+  WFLAGS_NOIMPLICITINT="-Wno-implicit-int"
 fi
 AC_SUBST(WFLAGS)dnl
 AC_SUBST(WFLAGS_NOUNUSED)dnl
-AC_SUBST(WFLAGS_NORETURNTYPE)dnl
+AC_SUBST(WFLAGS_NOIMPLICITINT)dnl
 ])