diff --git a/packages/x11/other/fontconfig/build b/packages/x11/other/fontconfig/build
index f86abbff8c..8c8e54b338 100755
--- a/packages/x11/other/fontconfig/build
+++ b/packages/x11/other/fontconfig/build
@@ -7,6 +7,10 @@ $SCRIPTS/build freetype
 $SCRIPTS/build libxml2
 $SCRIPTS/build zlib
 
+# ensure we dont use '-O3' optimization.
+  CFLAGS=`echo $CFLAGS | sed -e "s|-O3|-O2|"`
+  CXXFLAGS=`echo $CXXFLAGS | sed -e "s|-O3|-O2|"`
+
 cd $PKG_BUILD
 ./configure --host=$TARGET_NAME \
             --build=$HOST_NAME \