diff --git a/src/relay/op/contrib/ethosu/binary_elementwise.cc b/src/relay/op/contrib/ethosu/binary_elementwise.cc
index 258c84c70660..9a681b7cdc88 100644
--- a/src/relay/op/contrib/ethosu/binary_elementwise.cc
+++ b/src/relay/op/contrib/ethosu/binary_elementwise.cc
@@ -152,12 +152,12 @@ bool EthosuBinaryElementwiseRel(const Array<Type>& types, int num_inputs, const
   CheckDataTypeMatch(reporter, ifm_dtype, ifm2_dtype, operator_name, "ifm", "ifm2", operator_type);
 
   if (operator_type == "ADD" || operator_type == "SUB" || operator_type == "MUL") {
-    std::initializer_list<DataType> allowed_types = {DataType::Int(8), DataType::UInt(8),
-                                                     DataType::Int(16), DataType::Int(32)};
+    auto allowed_types = {DataType::Int(8), DataType::UInt(8), DataType::Int(16),
+                          DataType::Int(32)};
     CheckDataType(reporter, ifm_dtype, allowed_types, operator_name, "ifm", operator_type);
     CheckDataType(reporter, ofm_dtype, allowed_types, operator_name, "ofm", operator_type);
   } else if (operator_type == "MIN" || operator_type == "MAX") {
-    std::initializer_list<DataType> allowed_types = {DataType::Int(8), DataType::UInt(8)};
+    auto allowed_types = {DataType::Int(8), DataType::UInt(8)};
     CheckDataType(reporter, ifm_dtype, allowed_types, operator_name, "ifm", operator_type);
     CheckDataTypeMatch(reporter, ifm_dtype, ofm_dtype, operator_name, "ifm", "ofm", operator_type);
   } else if (operator_type == "SHR") {
diff --git a/src/relay/op/contrib/ethosu/common.cc b/src/relay/op/contrib/ethosu/common.cc
index a9fcd4301e81..5e957957bc1e 100644
--- a/src/relay/op/contrib/ethosu/common.cc
+++ b/src/relay/op/contrib/ethosu/common.cc
@@ -25,7 +25,6 @@
 #include "common.h"
 
 #include <sstream>
-#include <unordered_set>
 
 #include "../../op_common.h"
 
diff --git a/src/relay/op/contrib/ethosu/common.h b/src/relay/op/contrib/ethosu/common.h
index b993b78749ae..a399a2e53aa4 100644
--- a/src/relay/op/contrib/ethosu/common.h
+++ b/src/relay/op/contrib/ethosu/common.h
@@ -27,8 +27,6 @@
 
 #include <tvm/relay/expr.h>
 
-#include <unordered_set>
-
 namespace tvm {
 namespace relay {
 namespace op {
diff --git a/src/relay/op/contrib/ethosu/depthwise.cc b/src/relay/op/contrib/ethosu/depthwise.cc
index b631f5b8e6a4..7e9fed5041be 100644
--- a/src/relay/op/contrib/ethosu/depthwise.cc
+++ b/src/relay/op/contrib/ethosu/depthwise.cc
@@ -144,8 +144,7 @@ bool EthosuDepthwiseConv2DRel(const Array<Type>& types, int num_inputs, const At
   CheckDataType(reporter, scale_bias->dtype, {DataType::UInt(8)}, operator_name, "scale bias");
 
   DataType ofm_dtype = DataTypeFromString(param->ofm_dtype);
-  std::initializer_list<DataType> ofm_dtypes = {DataType::UInt(8), DataType::Int(8),
-                                                DataType::Int(16), DataType::Int(32)};
+  auto ofm_dtypes = {DataType::UInt(8), DataType::Int(8), DataType::Int(16), DataType::Int(32)};
   CheckDataType(reporter, ofm_dtype, ofm_dtypes, operator_name, "ofm");
 
   // Collect the ifm, weight and ofm tensors for using in the inference function