diff --git a/utest/Makefile b/utest/Makefile
index ce0f5c430..d4154e0c2 100644
--- a/utest/Makefile
+++ b/utest/Makefile
@@ -58,6 +58,7 @@ OBJS = utest_main2.o
 endif
 ifeq ($(OSNAME), AIX)
 OBJS = utest_main2.o
+OBJS_EXT = $(DIR_EXT)/utest_main2.o
 endif
 
 all : run_test