diff --git a/src/compiler/nir/tests/serialize_tests.cpp b/src/compiler/nir/tests/serialize_tests.cpp
index 451fc2c9f2a..12a13d87da0 100644
--- a/src/compiler/nir/tests/serialize_tests.cpp
+++ b/src/compiler/nir/tests/serialize_tests.cpp
@@ -44,7 +44,7 @@ protected:
 };
 
 nir_serialize_test::nir_serialize_test()
-:  options()
+:  dup(NULL), options()
 {
    glsl_type_singleton_init_or_ref();