diff --git a/packages/tools/syslinux/build b/packages/tools/syslinux/build
index 046206dd6e..90a35cd4ff 100755
--- a/packages/tools/syslinux/build
+++ b/packages/tools/syslinux/build
@@ -4,10 +4,6 @@
 
 $SCRIPTS/build toolchain
 
-# ensure we dont use size optimization.
-  CFLAGS=`echo $CFLAGS | sed -e "s|-Os|-O2|"`
-  CXXFLAGS=`echo $CXXFLAGS | sed -e "s|-Os|-O2|"`
-
 CFLAGS="$CFLAGS -I`ls -d $ROOT/$BUILD/$1*`/libinstaller"
 CFLAGS="$CFLAGS -I`ls -d $ROOT/$BUILD/$1*`/libfat"