diff --git a/src/mesa/shader/slang/slang_typeinfo.c b/src/mesa/shader/slang/slang_typeinfo.c
index b3255512ba0..b2f0f149956 100644
--- a/src/mesa/shader/slang/slang_typeinfo.c
+++ b/src/mesa/shader/slang/slang_typeinfo.c
@@ -273,7 +273,7 @@ slang_type_specifier_compatible(const slang_type_specifier * x,
 GLboolean
 slang_typeinfo_construct(slang_typeinfo * ti)
 {
-   /*_mesa_bzero(ti, sizeof(*ti));*/
+   _mesa_bzero(ti, sizeof(*ti));
    slang_type_specifier_ctr(&ti->spec);
    ti->array_len = 0;
    return GL_TRUE;