diff --git a/paddle/api/Arguments.cpp b/paddle/api/Arguments.cpp
index f9f191c711793fbe9285fd6b1ed8d3a74f168279..8f73e7626042c9b138625ec9db599fdc2e42cc9b 100644
--- a/paddle/api/Arguments.cpp
+++ b/paddle/api/Arguments.cpp
@@ -110,8 +110,8 @@ IVector* Arguments::getSlotSequenceStartPositions(size_t idx) const
   }
 }
 
-IVector*Arguments::getSlotSubSequenceStartPositions(size_t idx) const
-    throw (RangeError){
+IVector* Arguments::getSlotSubSequenceStartPositions(size_t idx) const
+    throw(RangeError) {
   auto& a = m->getArg(idx);
   if (a.subSequenceStartPositions) {
     return IVector::createByPaddleVectorPtr(
@@ -129,7 +129,7 @@ void Arguments::setSlotSequenceStartPositions(size_t idx,
 }
 
 void Arguments::setSlotSubSequenceStartPositions(
-    size_t idx, IVector *vec) throw (RangeError) {
+    size_t idx, IVector *vec) throw(RangeError) {
   auto& a = m->getArg(idx);
   auto& v = m->cast<paddle::IVector>(vec->getSharedPtr());
   a.subSequenceStartPositions = std::make_shared<paddle::ICpuGpuVector>(v);
diff --git a/paddle/api/PaddleAPI.h b/paddle/api/PaddleAPI.h
index c92ed205d5484754ac5bab5e8fa47fdd59a95b54..79487c4cf4d41f416e9269580bd7629947ca6cd6 100644
--- a/paddle/api/PaddleAPI.h
+++ b/paddle/api/PaddleAPI.h
@@ -392,7 +392,7 @@ public:
   void setSlotSequenceStartPositions(size_t idx,
                                      IVector* vec) throw(RangeError);
   void setSlotSubSequenceStartPositions(size_t idx,
-                                        IVector* vec) throw (RangeError);
+                                        IVector* vec) throw(RangeError);
   void setSlotSequenceDim(size_t idx, IVector* vec) throw(RangeError);
 
 private: