diff --git a/soong/makevars.mk b/soong/makevars.mk
index f8563ec..7ccb32f 100644
--- a/soong/makevars.mk
+++ b/soong/makevars.mk
@@ -48,7 +48,8 @@ EXPORT_TO_SOONG := \
     TW_HAPTICS_TSPDRV \
     TARGET_PREBUILT_KERNEL \
     TW_EXCLUDE_NANO \
-    TW_SUPPORT_INPUT_AIDL_HAPTICS
+    TW_SUPPORT_INPUT_AIDL_HAPTICS \
+    TW_USE_SAMSUNG_HAPTICS
 
 SOONG_CONFIG_NAMESPACES += makeVarsPlugin
 SOONG_CONFIG_makeVarsPlugin :=