diff --git a/extract-files.sh b/extract-files.sh
index 8705efe..d4ce05a 100755
--- a/extract-files.sh
+++ b/extract-files.sh
@@ -52,9 +52,9 @@ fi
 function blob_fixup() {
     case "${1}" in
     vendor/lib64/hw/camera.qcom.so)
-        patchelf --remove-needed "libMegviiFacepp-0.5.2.so" "${2}"
-        patchelf --remove-needed "libmegface.so" "${2}"
-        patchelf --add-needed "libshim_megvii.so" "${2}"
+        $PATCHELF --remove-needed "libMegviiFacepp-0.5.2.so" "${2}"
+        $PATCHELF --remove-needed "libmegface.so" "${2}"
+        $PATCHELF --add-needed "libshim_megvii.so" "${2}"
         ;;
     esac
 }