diff --git a/Android.mk b/Android.mk
index 9be1b59..d0b284e 100644
--- a/Android.mk
+++ b/Android.mk
@@ -206,6 +206,7 @@
         src/armnn/layers/SwitchLayer.cpp \
         src/armnn/layers/TransposeConvolution2dLayer.cpp \
         src/armnn/layers/TransposeLayer.cpp \
+        src/armnn/layers/UnmapLayer.cpp \
         src/profiling/ActivateTimelineReportingCommandHandler.cpp \
         src/profiling/BufferManager.cpp \
         src/profiling/CommandHandler.cpp \