diff --git a/m4/moo-debug.m4 b/m4/moo-debug.m4
index 16b1d66e..021b2405 100644
--- a/m4/moo-debug.m4
+++ b/m4/moo-debug.m4
@@ -99,16 +99,6 @@ AC_SUBST(_moo_WNAME)
 m4_undefine([_moo_WNAME])
 ])
 
-if $MOO_GCC; then
-  if test x$MOO_DEBUG_ENABLED = "xyes"; then
-    _MOO_AC_CHECK_COMPILER_OPTIONS(MOO_DEBUG_CFLAGS,[-fstrict-aliasing -Wstrict-aliasing])
-    _MOO_AC_CHECK_CPP_COMPILER_OPTIONS(MOO_DEBUG_CXXFLAGS,[-fstrict-aliasing -Wstrict-aliasing])
-  else
-    _MOO_AC_CHECK_COMPILER_OPTIONS(MOO_DEBUG_CFLAGS,[-fno-strict-aliasing])
-    _MOO_AC_CHECK_CPP_COMPILER_OPTIONS(MOO_DEBUG_CXXFLAGS,[-fno-strict-aliasing])
-  fi
-fi
-
 if test "x$MOO_DEBUG_ENABLED" = "xyes"; then
 _moo_debug_flags="-DG_DISABLE_DEPRECATED -DGTK_DISABLE_DEPRECATED dnl
 -DGDK_DISABLE_DEPRECATED -DENABLE_DEBUG -DENABLE_PROFILE dnl
diff --git a/m4/moo-flags.m4 b/m4/moo-flags.m4
index d85c383d..71517593 100644
--- a/m4/moo-flags.m4
+++ b/m4/moo-flags.m4
@@ -54,9 +54,11 @@ AC_DEFUN_ONCE([MOO_AC_PRIV_FLAGS],[
 
   MOO_CXXFLAGS="$MOO_CFLAGS"
 
-#   if $MOO_GCC; then
+  if $MOO_GCC; then
+    _MOO_AC_CHECK_COMPILER_OPTIONS(MOO_CFLAGS,[-fno-strict-aliasing],[verbose])
+    _MOO_AC_CHECK_CPP_COMPILER_OPTIONS(MOO_CXXFLAGS,[-fno-strict-aliasing],[verbose])
 #     _MOO_AC_CHECK_CPP_COMPILER_OPTIONS(MOO_CXXFLAGS,[-fno-exceptions],[verbose])
-#   fi
+  fi
 
   MOO_CXXFLAGS="$MOO_CXXFLAGS $MOO_DEBUG_CXXFLAGS"
   MOO_CFLAGS="$MOO_CFLAGS $MOO_DEBUG_CFLAGS"