diff --git a/src/backend/RISCv64/RISCv64Backend.cpp b/src/backend/RISCv64/RISCv64Backend.cpp
index bd447fd..57fb690 100644
--- a/src/backend/RISCv64/RISCv64Backend.cpp
+++ b/src/backend/RISCv64/RISCv64Backend.cpp
@@ -256,7 +256,7 @@ std::string RISCv64CodeGen::function_gen(Function* func) {
         << ss_after_eli.str();
     }
 
-    if (optLevel > 0) {
+    if (optLevel == 0) {
         // 阶段 2.1: 除法强度削弱优化 (Division Strength Reduction)
         DivStrengthReduction div_strength_reduction;
         div_strength_reduction.runOnMachineFunction(mfunc.get());
@@ -372,7 +372,7 @@ std::string RISCv64CodeGen::function_gen(Function* func) {
         mfunc->dumpStackFrameInfo(std::cerr);
     }
 
-    if (optLevel > 0) {
+    if (optLevel == 0) {
         // 阶段 4: 窥孔优化 (Peephole Optimization)
         PeepholeOptimizer peephole;
         peephole.runOnMachineFunction(mfunc.get());
diff --git a/src/sysyc.cpp b/src/sysyc.cpp
index 7ef22f9..129eae5 100644
--- a/src/sysyc.cpp
+++ b/src/sysyc.cpp
@@ -70,6 +70,9 @@ void parseArgs(int argc, char **argv) {
         if (optLevel < 0) {
           cerr << "Error: Optimization level must be non-negative." << endl;
           usage(EXIT_FAILURE);
+        } else if (optLevel > 0) {
+          cerr << "Debugging, set optLevel to 0...\n";
+          optLevel = 0;
         }
       } catch (const std::invalid_argument& ia) {
         cerr << "Error: Invalid argument for -O: " << optarg << endl;