diff --git a/test/site.exp.in b/test/site.exp.in
index c760c2c1992..0573def8ef2 100644
--- a/test/site.exp.in
+++ b/test/site.exp.in
@@ -24,3 +24,4 @@ set valgrind "@VALGRIND@"
 set grep "@GREP@"
 set gas "@AS@"
 set llvmdsymutil "@DSYMUTIL@"
+set emitir "@LLVMCC_EMITIR_FLAG@"