diff --git a/mace/core/runtime/opencl/opencl_runtime.cc b/mace/core/runtime/opencl/opencl_runtime.cc
index 065dc8659959224c7e35d2646f8157978f7d2f2f..90387f3150e82d15b8750d18b7e404a6c64e0724 100644
--- a/mace/core/runtime/opencl/opencl_runtime.cc
+++ b/mace/core/runtime/opencl/opencl_runtime.cc
@@ -158,7 +158,7 @@ void OpenCLRuntime::BuildProgram(const std::string &program_name,
                                               program,
                                               &is_opencl_binary);
   MACE_CHECK(found, "Program not found for ",
-                    is_opencl_binary ? "source: " : "binary: ",
+                    is_opencl_binary ? "binary: " : "source: ",
                     built_program_key);
 
   // Build program
@@ -174,7 +174,7 @@ void OpenCLRuntime::BuildProgram(const std::string &program_name,
       LOG(INFO) << "Program build log: " << build_log;
     }
     LOG(FATAL) << "Build program from "
-               << (is_opencl_binary ? "source: " : "binary: ")
+               << (is_opencl_binary ? "binary: " : "source: ")
                << built_program_key
                << " failed: " << ret;
   }
diff --git a/mace/python/tools/binary_codegen.py b/mace/python/tools/binary_codegen.py
index 9a593fe337cd4dc959c5a4bf7b3f601474769e98..a7cd756b74d3a2b67bae1974bddba85cd3deca99 100644
--- a/mace/python/tools/binary_codegen.py
+++ b/mace/python/tools/binary_codegen.py
@@ -34,7 +34,6 @@ def generate_cpp_source():
     key_size, = struct.unpack("i", binary_array[idx:idx+4])
     idx += 4
     key, = struct.unpack(str(key_size) + "s", binary_array[idx:idx+key_size])
-    key = ''.join([ "\\%03o" % ord(c) if not c.isalnum() else c for c in key])
     idx += key_size
     params_size, = struct.unpack("i", binary_array[idx:idx+4])
     idx += 4