diff --git a/action.yml b/action.yml
index c95ae8c..bc6b4c4 100644
--- a/action.yml
+++ b/action.yml
@@ -41,7 +41,9 @@ runs:
         SOURCE_DIRECTORY: ${{ inputs.extra-source-directory }}
       run: |
         mkdir -p ./rpmbuild/SOURCES
-        tar -czf source.tar.gz ${SOURCE_DIRECTORY}
+        BASENAME=$(basename "${SOURCE_DIRECTORY}")
+        DIRNAME=$(dirname "${SOURCE_DIRECTORY}")
+        tar -czf source.tar.gz -C ${DIRNAME} ${BASENAME}
         mv source.tar.gz ./rpmbuild/SOURCES/
 
     - name: Add extra patch files