diff --git a/lib/Optimizer/GraphOptimizer/GraphOptimizer.cpp b/lib/Optimizer/GraphOptimizer/GraphOptimizer.cpp
index 6e80bae630..fcabf30ac7 100644
--- a/lib/Optimizer/GraphOptimizer/GraphOptimizer.cpp
+++ b/lib/Optimizer/GraphOptimizer/GraphOptimizer.cpp
@@ -5287,32 +5287,20 @@ bool OptimizeQuantization::run(Function *F, const CompilationContext &cctx) {
       bool addNewNodeToWorklist = false;
       switch (RS->getInput().getNode()->getKind()) {
       case Kinded::Kind::RescaleQuantizedNodeKind:
-        [[fallthrough]];
       case Kinded::Kind::QuantizeNodeKind:
         addNewNodeToWorklist = true;
         [[fallthrough]];
       case Kinded::Kind::SplatNodeKind:
-        [[fallthrough]];
       case Kinded::Kind::AddNodeKind:
-        [[fallthrough]];
       case Kinded::Kind::SubNodeKind:
-        [[fallthrough]];
       case Kinded::Kind::MulNodeKind:
-        [[fallthrough]];
       case Kinded::Kind::DivNodeKind:
-        [[fallthrough]];
       case Kinded::Kind::FmodNodeKind:
-        [[fallthrough]];
       case Kinded::Kind::MinNodeKind:
-        [[fallthrough]];
       case Kinded::Kind::MatMulNodeKind:
-        [[fallthrough]];
       case Kinded::Kind::ConvolutionNodeKind:
-        [[fallthrough]];
       case Kinded::Kind::ChannelwiseQuantizedConvolutionNodeKind:
-        [[fallthrough]];
       case Kinded::Kind::FullyConnectedNodeKind:
-        [[fallthrough]];
       case Kinded::Kind::SparseLengthsWeightedSumNodeKind: {
         changed = true;
         Node *newNode =