diff --git a/buildjdk.sh b/buildjdk.sh
index d07b752..c45752b 100755
--- a/buildjdk.sh
+++ b/buildjdk.sh
@@ -9,7 +9,11 @@ if [ "$TARGET_JDK" == "arm" ] # || [ "$BUILD_IOS" == "1" ]
 then
   export CFLAGS+=" -O3 -D__thumb__"
 else
-  export CFLAGS+=" -O3"
+  if [ "$TARGET_JDK" == "x86" ]; then
+     export CFLAGS+=" -O3 -mstackrealign"
+  else
+     export CFLAGS+=" -O3"
+  fi
 fi
 
 # if [ "$TARGET_JDK" == "aarch32" ] || [ "$TARGET_JDK" == "aarch64" ]