diff --git a/target-unicore32/cpu.c b/target-unicore32/cpu.c
index 9239d4951110e49c5ac910e79f4f8def8bfadf35..6735b253c23f9cc656e3e724cd375284b23422d3 100644
--- a/target-unicore32/cpu.c
+++ b/target-unicore32/cpu.c
@@ -31,7 +31,8 @@ static ObjectClass *uc32_cpu_class_by_name(const char *cpu_model)
     }
 
     oc = object_class_by_name(cpu_model);
-    if (oc != NULL && !object_class_dynamic_cast(oc, TYPE_UNICORE32_CPU)) {
+    if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_UNICORE32_CPU) ||
+                       object_class_is_abstract(oc))) {
         oc = NULL;
     }
     return oc;