diff --git a/mace/kernels/neon/conv_2d_neon.cc b/mace/kernels/neon/conv_2d_neon.cc
index c9678fd8e2e2b6e44320c5182aae7f3d0a2f1a20..fc71b187fdce52c4cb09ad220e05ff1d4c89fb07 100644
--- a/mace/kernels/neon/conv_2d_neon.cc
+++ b/mace/kernels/neon/conv_2d_neon.cc
@@ -60,5 +60,5 @@ void Conv2dFunctor<DeviceType::NEON, float>::operator()(const float* input, // N
   );
 }
 
-} // namespace kernels
+} //  namespace kernels
 } //  namespace mace
\ No newline at end of file
diff --git a/mace/kernels/neon/conv_2d_neon_3x3.cc b/mace/kernels/neon/conv_2d_neon_3x3.cc
index 4397076d162f5a61c277c4bacb65a7e68512c4fe..bc88dc494a459ab1ec53c7f1ac8c2c9173e65318 100644
--- a/mace/kernels/neon/conv_2d_neon_3x3.cc
+++ b/mace/kernels/neon/conv_2d_neon_3x3.cc
@@ -18,5 +18,5 @@ void Conv2dNeon<3, 3, 1, 1>(const float* input, // NCHW
 
 }
 
-} // namespace kernels
+} //  namespace kernels
 } //  namespace mace
diff --git a/mace/kernels/neon/conv_2d_neon_base.h b/mace/kernels/neon/conv_2d_neon_base.h
index 4e0b5024d77d3032bd6ff6cc5ad3b8a389458936..3e93b51a8ba5020a0bb56aee232d189cb7382de7 100644
--- a/mace/kernels/neon/conv_2d_neon_base.h
+++ b/mace/kernels/neon/conv_2d_neon_base.h
@@ -18,7 +18,7 @@ inline void Conv2dNeon(const float* input, // NCHW
                            float* output, // NCHW
                            const index_t* output_shape);
 
-} // namespace kernels
+} //  namespace kernels
 } //  namespace mace
 
 #endif //  MACE_KERNELS_NEON_CONV_2D_NEON_BASE_H_