diff --git a/paddle/gserver/tests/test_RecurrentGradientMachine.cpp b/paddle/gserver/tests/test_RecurrentGradientMachine.cpp
index 150850da4d..4a846397e6 100644
--- a/paddle/gserver/tests/test_RecurrentGradientMachine.cpp
+++ b/paddle/gserver/tests/test_RecurrentGradientMachine.cpp
@@ -14,6 +14,7 @@ limitations under the License. */
 
 #include <gtest/gtest.h>
 #include <paddle/gserver/gradientmachines/GradientMachine.h>
+#include <paddle/parameter/ParameterUpdateFunctions.h>
 #include <paddle/trainer/Trainer.h>
 #include <paddle/trainer/TrainerInternal.h>
 #include <paddle/utils/PythonUtil.h>
diff --git a/paddle/parameter/Argument.cpp b/paddle/parameter/Argument.cpp
index 645bf73799..6d9365af2d 100644
--- a/paddle/parameter/Argument.cpp
+++ b/paddle/parameter/Argument.cpp
@@ -570,7 +570,7 @@ void Argument::poolSequenceWithStride(const Argument& input,
 
   CHECK(input.sequenceStartPositions);
   CHECK_EQ(input.hasSubseq(), 0UL);
-  CHECK_GT(stride, 0) << "stride must larger than 0";
+  CHECK_GT(stride, 0UL) << "stride must larger than 0";
   size_t numSequences = input.getNumSequences();
   ICpuGpuVector::resizeOrCreate(
       sequenceStartPositions, numSequences + 1, false);