diff --git a/src/microsoft/compiler/dxil_signature.c b/src/microsoft/compiler/dxil_signature.c
index 84ee5acc693..0b8539e5d3d 100644
--- a/src/microsoft/compiler/dxil_signature.c
+++ b/src/microsoft/compiler/dxil_signature.c
@@ -130,7 +130,7 @@ get_additional_semantic_info(nir_shader *s, nir_variable *var, struct semantic_i
 
    bool is_depth = is_depth_output(info->kind);
 
-   if (!glsl_type_is_struct(type)) {
+   if (!glsl_type_is_struct(glsl_without_array(type))) {
       info->sig_comp_type = dxil_get_comp_type(type);
    } else if (var->data.interpolation == INTERP_MODE_FLAT) {
       info->sig_comp_type = DXIL_COMP_TYPE_U32;