diff --git a/src/agat/agat_sp_merge_annotations/test.sh b/src/agat/agat_sp_merge_annotations/test.sh
index 00ff1997..f8282f54 100644
--- a/src/agat/agat_sp_merge_annotations/test.sh
+++ b/src/agat/agat_sp_merge_annotations/test.sh
@@ -8,7 +8,7 @@ test_dir="${meta_resources_dir}/test_data"
 # create temporary directory and clean up on exit
 TMPDIR=$(mktemp --tmpdir "$meta_temp_dir")
 function clean_up {
-  [[ -d "$TMPDIR" ]] && rm -r "$TMPDIR"
+  rm -rf "$TMPDIR"
 }
 trap clean_up EXIT