diff --git a/support/scripts/apply-patches.sh b/support/scripts/apply-patches.sh
index e4b98bc057..f82be8643d 100755
--- a/support/scripts/apply-patches.sh
+++ b/support/scripts/apply-patches.sh
@@ -87,7 +87,7 @@ function scan_patchdir {
     fi
 }
 
-scan_patchdir $patchdir $patchpattern
+scan_patchdir "$patchdir" "$patchpattern"
 
 # Check for rejects...
 if [ "`find $builddir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ] ; then