diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/usdt/tst.enabled2.ksh b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/usdt/tst.enabled2.ksh
index 662076a5a2d4..8fd321ae6524 100644
--- a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/usdt/tst.enabled2.ksh
+++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/usdt/tst.enabled2.ksh
@@ -77,7 +77,7 @@ main(int argc, char **argv)
 }
 EOF
 
-cc -c -xO2 test.c
+cc -c -O2 test.c
 if [ $? -ne 0 ]; then
 	print -u2 "failed to compile test.c"
 	exit 1