diff --git a/tests/scripts/docs_check_outputs.sh b/tests/scripts/docs_check_outputs.sh
index 215fd4c..066bc05 100644
--- a/tests/scripts/docs_check_outputs.sh
+++ b/tests/scripts/docs_check_outputs.sh
@@ -17,7 +17,7 @@ printf '%s\n' "$files" | while IFS= read -r f; do
     [ -z "$f" ] && continue
     if [ ! -f "$f" ]; then
         echo "$f" >> "$missing_file"
-         missing=$((missing + 1))
+        missing=$((missing + 1))
     fi
 done