diff --git a/src/backends/reference/workloads/DetectionPostProcess.cpp b/src/backends/reference/workloads/DetectionPostProcess.cpp
index 6868180..d3790f2 100644
--- a/src/backends/reference/workloads/DetectionPostProcess.cpp
+++ b/src/backends/reference/workloads/DetectionPostProcess.cpp
@@ -7,6 +7,7 @@
 
 #include <armnn/ArmNN.hpp>
 
+#include <boost/assert.hpp>
 #include <boost/numeric/conversion/cast.hpp>
 
 #include <algorithm>