diff --git a/core/iwasm/interpreter/wasm_loader.c b/core/iwasm/interpreter/wasm_loader.c
index a2c67bea2c..11809dbd5c 100644
--- a/core/iwasm/interpreter/wasm_loader.c
+++ b/core/iwasm/interpreter/wasm_loader.c
@@ -12178,7 +12178,9 @@ wasm_loader_prepare_bytecode(WASMModule *module, WASMFunction *func,
                         }
 #endif
 
+#if WASM_ENABLE_FAST_INTERP != 0
                         uint8 *frame_ref_before_pop = loader_ctx->frame_ref;
+#endif
                         POP_TYPE(
                             wasm_type->types[wasm_type->param_count - i - 1]);
 #if WASM_ENABLE_FAST_INTERP != 0