diff --git a/soong/makevars.mk b/soong/makevars.mk
index d60da0d..f8563ec 100644
--- a/soong/makevars.mk
+++ b/soong/makevars.mk
@@ -47,7 +47,8 @@ EXPORT_TO_SOONG := \
     TW_WHITELIST_INPUT \
     TW_HAPTICS_TSPDRV \
     TARGET_PREBUILT_KERNEL \
-    TW_EXCLUDE_NANO
+    TW_EXCLUDE_NANO \
+    TW_SUPPORT_INPUT_AIDL_HAPTICS
 
 SOONG_CONFIG_NAMESPACES += makeVarsPlugin
 SOONG_CONFIG_makeVarsPlugin :=