diff --git a/build/tools/extract_utils.sh b/build/tools/extract_utils.sh
index 2355203..4c76b44 100644
--- a/build/tools/extract_utils.sh
+++ b/build/tools/extract_utils.sh
@@ -1024,7 +1024,7 @@
         mkdir -p $(dirname "${VENDOR_REPO_FILE}")
 
         # Check pinned files
-        local HASH="${HASHLIST[$i-1]}"
+        local HASH="$(echo ${HASHLIST[$i-1]} | awk '{ print tolower($0); }')"
         local KEEP=""
         if [ "$DISABLE_PINNING" != "1" ] && [ ! -z "$HASH" ] && [ "$HASH" != "x" ]; then
             if [ -f "${VENDOR_REPO_FILE}" ]; then