diff --git a/device.mk b/device.mk
index e446acb3..a60f79e9 100644
--- a/device.mk
+++ b/device.mk
@@ -1125,7 +1125,7 @@ PRODUCT_PACKAGES_DEBUG += BatteryStatsViewer
 # Install product specific framework compatibility matrix
 # (TODO: b/169535506) This includes the FCM for system_ext and product partition.
 # It must be split into the FCM of each partition.
-DEVICE_PRODUCT_COMPATIBILITY_MATRIX_FILE := device/google/zuma/device_framework_matrix_product.xml
+DEVICE_PRODUCT_COMPATIBILITY_MATRIX_FILE += device/google/zuma/device_framework_matrix_product.xml
 
 # Keymint configuration
 PRODUCT_COPY_FILES += \