diff --git a/runtime/onert/core/src/ir/OperationDumper.cc b/runtime/onert/core/src/ir/OperationDumper.cc
index e0f28795b9d..b6c62eb2d40 100644
--- a/runtime/onert/core/src/ir/OperationDumper.cc
+++ b/runtime/onert/core/src/ir/OperationDumper.cc
@@ -267,7 +267,6 @@ void OperationDumper::visit(const Pad &node)
 
 void OperationDumper::visit(const Permute &node)
 {
-  std::string permute_type = "Unknown";
 
   VERBOSE(LIR) << "* " << node.name() << std::endl;
   VERBOSE(LIR) << "  - Inputs : Input(" << node.getInputs().at(0) << ")" << std::endl;