diff --git a/target/board/mainline_sdk/BoardConfig.mk b/target/board/mainline_sdk/BoardConfig.mk
index 84f8b2dac6..f5c2dc6b49 100644
--- a/target/board/mainline_sdk/BoardConfig.mk
+++ b/target/board/mainline_sdk/BoardConfig.mk
@@ -18,3 +18,6 @@ TARGET_ARCH_SUITE := mainline_sdk
 HOST_CROSS_OS := linux_bionic
 HOST_CROSS_ARCH := x86_64
 HOST_CROSS_2ND_ARCH :=
+
+# Required flag for non-64 bit devices from P.
+TARGET_USES_64_BIT_BINDER := true