diff --git a/src/compiler/nir/nir_lower_io.c b/src/compiler/nir/nir_lower_io.c
index bac6b8e99b4..1fc69f161a1 100644
--- a/src/compiler/nir/nir_lower_io.c
+++ b/src/compiler/nir/nir_lower_io.c
@@ -1756,7 +1756,8 @@ nir_lower_vars_to_explicit_types(nir_shader *shader,
     * - compact shader inputs/outputs
     * - interface types
     */
-   ASSERTED nir_variable_mode supported = nir_var_mem_shared |
+   ASSERTED nir_variable_mode supported =
+      nir_var_mem_shared | nir_var_mem_global |
       nir_var_shader_temp | nir_var_function_temp;
    assert(!(modes & ~supported) && "unsupported");