diff --git a/cf/wflags.m4 b/cf/wflags.m4
index 016d1bd30..7c9a0f998 100644
--- a/cf/wflags.m4
+++ b/cf/wflags.m4
@@ -26,8 +26,9 @@ if test -z "$WFLAGS" -a "$GCC" = "yes"; then
   # WFLAGS_LITE can be appended to WFLAGS to turn off a host of warnings
   # that fail for various bits of older code in appl/.  Let's not use it
   # for the main libraries, though.
+  WFLAGS_LITE="-Wno-extra -Wno-missing-field-initializers -Wno-strict-aliasing -Wno-shadow"
+  # -Wno-unused-result (not supported on gcc-4.2)
 
-  WFLAGS_LITE="-Wno-extra -Wno-missing-field-initializers -Wno-strict-aliasing -Wno-unused-result -Wno-shadow"
 fi
 AC_SUBST(WFLAGS)dnl
 AC_SUBST(WFLAGS_LITE)dnl