arm_compute v18.08
diff --git a/src/runtime/NEON/functions/NEDepthwiseSeparableConvolutionLayer.cpp b/src/runtime/NEON/functions/NEDepthwiseSeparableConvolutionLayer.cpp
index d70a668..da2e49c 100644
--- a/src/runtime/NEON/functions/NEDepthwiseSeparableConvolutionLayer.cpp
+++ b/src/runtime/NEON/functions/NEDepthwiseSeparableConvolutionLayer.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 ARM Limited.
+ * Copyright (c) 2017-2018 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -45,6 +45,14 @@
 
 void NEDepthwiseSeparableConvolutionLayer::run()
 {
+    prepare();
+
     _depthwise_conv.run();
     _pointwise_conv.run();
+}
+
+void NEDepthwiseSeparableConvolutionLayer::prepare()
+{
+    _depthwise_conv.prepare();
+    _pointwise_conv.prepare();
 }
\ No newline at end of file