diff --git a/tools/testing/radix-tree/Makefile b/tools/testing/radix-tree/Makefile
index 4c6289c5d415..6a9480c03cbd 100644
--- a/tools/testing/radix-tree/Makefile
+++ b/tools/testing/radix-tree/Makefile
@@ -13,6 +13,7 @@ endif
 
 ifeq ($(BUILD), 32)
 	CFLAGS += -m32
+	LDFLAGS += -m32
 endif
 
 targets: mapshift $(TARGETS)