diff --git a/build/tools/extract_utils.sh b/build/tools/extract_utils.sh
index a6239ce..11819f3 100644
--- a/build/tools/extract_utils.sh
+++ b/build/tools/extract_utils.sh
@@ -768,8 +768,8 @@
     local XML="$1"
     local TEMP_XML="$TMPDIR/`basename "$XML"`.temp"
 
-    grep '^<?xml version' "$XML" > "$TEMP_XML"
-    grep -v '^<?xml version' "$XML" >> "$TEMP_XML"
+    grep -a '^<?xml version' "$XML" > "$TEMP_XML"
+    grep -av '^<?xml version' "$XML" >> "$TEMP_XML"
 
     mv "$TEMP_XML" "$XML"
 }