diff --git a/src/backends/reference/backend.mk b/src/backends/reference/backend.mk
index acaedc9..a75146b 100644
--- a/src/backends/reference/backend.mk
+++ b/src/backends/reference/backend.mk
@@ -21,6 +21,7 @@
         workloads/FullyConnected.cpp \
         workloads/Gather.cpp \
         workloads/Mean.cpp \
+        workloads/Merger.cpp \
         workloads/Pad.cpp \
         workloads/Pooling2d.cpp \
         workloads/RefActivationFloat32Workload.cpp \