diff --git a/ssa/ssa_test.go b/ssa/ssa_test.go
index 409ec773..be584c08 100644
--- a/ssa/ssa_test.go
+++ b/ssa/ssa_test.go
@@ -400,7 +400,7 @@ func TestPrintf(t *testing.T) {
 	params := types.NewTuple(types.NewVar(0, nil, "format", pchar), VArg())
 	rets := types.NewTuple(types.NewVar(0, nil, "", types.Typ[types.Int32]))
 	sig := types.NewSignatureType(nil, nil, nil, params, rets, true)
-	pkg.NewFunc("printf", sig, InGo)
+	pkg.NewFunc("printf", sig, InC)
 	assertPkg(t, pkg, `; ModuleID = 'foo/bar'
 source_filename = "foo/bar"