diff --git a/tools/inspector_protocol/encoding/encoding.cc b/tools/inspector_protocol/encoding/encoding.cc
index f7858c9a22ba64..c1078769c7feaf 100644
--- a/tools/inspector_protocol/encoding/encoding.cc
+++ b/tools/inspector_protocol/encoding/encoding.cc
@@ -833,8 +833,9 @@ void CBORTokenizer::ReadNextToken(bool enter_envelope) {
           // inspector_protocol, it's not a CBOR limitation), so we check
           // against the signed max, so that the allowable values are
           // 0, 1, 2, ... 2^31 - 1.
-          if (!success || std::numeric_limits<int32_t>::max() <
-                              token_start_internal_value_) {
+          if (!success ||
+                static_cast<int64_t>(std::numeric_limits<int32_t>::max()) <
+                  static_cast<int64_t>(token_start_internal_value_)) {
             SetError(Error::CBOR_INVALID_INT32);
             return;
           }
diff --git a/tools/inspector_protocol/lib/encoding_cpp.template b/tools/inspector_protocol/lib/encoding_cpp.template
index 54a46ecd203d4d..6776471b6637c5 100644
--- a/tools/inspector_protocol/lib/encoding_cpp.template
+++ b/tools/inspector_protocol/lib/encoding_cpp.template
@@ -840,8 +840,9 @@ void CBORTokenizer::ReadNextToken(bool enter_envelope) {
           // inspector_protocol, it's not a CBOR limitation), so we check
           // against the signed max, so that the allowable values are
           // 0, 1, 2, ... 2^31 - 1.
-          if (!success || std::numeric_limits<int32_t>::max() <
-                              token_start_internal_value_) {
+          if (!success ||
+                static_cast<int64_t>(std::numeric_limits<int32_t>::max()) <
+                  static_cast<int64_t>(token_start_internal_value_)) {
             SetError(Error::CBOR_INVALID_INT32);
             return;
           }