diff --git a/include/caffe/vision_layers.hpp b/include/caffe/vision_layers.hpp
index 6cb507a5780..9cc23d1ff42 100644
--- a/include/caffe/vision_layers.hpp
+++ b/include/caffe/vision_layers.hpp
@@ -107,7 +107,7 @@ class BaseConvolutionLayer : public Layer<Dtype> {
   int col_offset_;
   int output_offset_;
 
-  Blob<Dtype> col_buffer_;
+  static Blob<Dtype> col_buffer_;
   Blob<Dtype> bias_multiplier_;
 };
 
diff --git a/src/caffe/layers/base_conv_layer.cpp b/src/caffe/layers/base_conv_layer.cpp
index dccd5170c11..a454d42cbb3 100644
--- a/src/caffe/layers/base_conv_layer.cpp
+++ b/src/caffe/layers/base_conv_layer.cpp
@@ -8,6 +8,9 @@
 
 namespace caffe {
 
+template <typename Dtype>
+Blob<Dtype> BaseConvolutionLayer<Dtype>::col_buffer_;
+
 template <typename Dtype>
 void BaseConvolutionLayer<Dtype>::LayerSetUp(const vector<Blob<Dtype>*>& bottom,
       const vector<Blob<Dtype>*>& top) {