diff --git a/core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/posix.c b/core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/posix.c
index 9801a4c58..385aa15cf 100644
--- a/core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/posix.c
+++ b/core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/posix.c
@@ -546,6 +546,7 @@ fd_object_release(wasm_exec_env_t env, struct fd_object *fo)
                     error = os_closedir(fo->directory.handle);
                     break;
                 }
+                // Fallthrough.
             default:
                 // The env == NULL case is for
                 // fd_table_destroy, path_get, path_put,