diff --git a/scripts/package-check.sh b/scripts/package-check.sh
index d7e602f31..9f4a9da21 100755
--- a/scripts/package-check.sh
+++ b/scripts/package-check.sh
@@ -42,7 +42,7 @@ while [[ $# -ge 1 ]]; do
   fi
   # Transform to a slash-separated path and add a trailing slash to enforce
   # package name boundary.
-  prefixes+=("${package//\./\/}/")
+  prefixes+=("${package//\.//}/")
   shift
 done