diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index 998f8a01..195fb211 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -94,7 +94,7 @@ jobs:
         run: |
           cd $GITHUB_WORKSPACE
           for URL in ${{matrix.download-datafiles}}; do
-            $FILENAME="${URL##*/}"
+            FILENAME="${URL##*/}"
             curl $URL --output $FILENAME
             unzip $FILENAME
             rm $FILENAME