diff --git a/src/backends/reference/workloads/Encoders.hpp b/src/backends/reference/workloads/Encoders.hpp
index 547bead..af3b937 100644
--- a/src/backends/reference/workloads/Encoders.hpp
+++ b/src/backends/reference/workloads/Encoders.hpp
@@ -7,6 +7,8 @@
 
 #include "BaseIterator.hpp"
 
+#include <boost/assert.hpp>
+
 namespace armnn
 {