diff --git a/benchmark/worker/benchmark_client.go b/benchmark/worker/benchmark_client.go
index f2a26503..d0e8f05b 100644
--- a/benchmark/worker/benchmark_client.go
+++ b/benchmark/worker/benchmark_client.go
@@ -118,7 +118,7 @@ func createConns(config *testpb.ClientConfig) ([]*grpc.ClientConn, func(), error
 	case testpb.ClientType_SYNC_CLIENT:
 	case testpb.ClientType_ASYNC_CLIENT:
 	default:
-		return nil, nil, status.Errorf(codes.InvalidArgument, "unknow client type: %v", config.ClientType)
+		return nil, nil, status.Errorf(codes.InvalidArgument, "unknown client type: %v", config.ClientType)
 	}
 
 	// Check and set security options.
@@ -142,7 +142,7 @@ func createConns(config *testpb.ClientConfig) ([]*grpc.ClientConn, func(), error
 			opts = append(opts, grpc.WithDefaultCallOptions(grpc.CallCustomCodec(byteBufCodec{})))
 		case *testpb.PayloadConfig_SimpleParams:
 		default:
-			return nil, nil, status.Errorf(codes.InvalidArgument, "unknow payload config: %v", config.PayloadConfig)
+			return nil, nil, status.Errorf(codes.InvalidArgument, "unknown payload config: %v", config.PayloadConfig)
 		}
 	}
 
@@ -177,7 +177,7 @@ func performRPCs(config *testpb.ClientConfig, conns []*grpc.ClientConn, bc *benc
 			payloadRespSize = int(c.SimpleParams.RespSize)
 			payloadType = "protobuf"
 		default:
-			return status.Errorf(codes.InvalidArgument, "unknow payload config: %v", config.PayloadConfig)
+			return status.Errorf(codes.InvalidArgument, "unknown payload config: %v", config.PayloadConfig)
 		}
 	}
 
diff --git a/benchmark/worker/benchmark_server.go b/benchmark/worker/benchmark_server.go
index 9770776f..639c0fe1 100644
--- a/benchmark/worker/benchmark_server.go
+++ b/benchmark/worker/benchmark_server.go
@@ -89,7 +89,7 @@ func startBenchmarkServer(config *testpb.ServerConfig, serverPort int) (*benchma
 	case testpb.ServerType_ASYNC_SERVER:
 	case testpb.ServerType_ASYNC_GENERIC_SERVER:
 	default:
-		return nil, status.Errorf(codes.InvalidArgument, "unknow server type: %v", config.ServerType)
+		return nil, status.Errorf(codes.InvalidArgument, "unknown server type: %v", config.ServerType)
 	}
 
 	// Set security options.
@@ -137,7 +137,7 @@ func startBenchmarkServer(config *testpb.ServerConfig, serverPort int) (*benchma
 		case *testpb.PayloadConfig_ComplexParams:
 			return nil, status.Errorf(codes.Unimplemented, "unsupported payload config: %v", config.PayloadConfig)
 		default:
-			return nil, status.Errorf(codes.InvalidArgument, "unknow payload config: %v", config.PayloadConfig)
+			return nil, status.Errorf(codes.InvalidArgument, "unknown payload config: %v", config.PayloadConfig)
 		}
 	} else {
 		// Start protobuf server if payload config is nil.