diff --git a/tests/subsys/fs/fat_fs_api/src/test_fat_dir.c b/tests/subsys/fs/fat_fs_api/src/test_fat_dir.c
index e79b36e67c5..22cfb0595b5 100644
--- a/tests/subsys/fs/fat_fs_api/src/test_fat_dir.c
+++ b/tests/subsys/fs/fat_fs_api/src/test_fat_dir.c
@@ -106,7 +106,7 @@ static int test_rmdir(void)
 	int res;
 	struct fs_dir_t dirp;
 	static struct fs_dirent entry;
-	char file_path[80];
+	char file_path[80 + MAX_FILE_NAME];
 
 	TC_PRINT("\nrmdir tests:\n");