diff --git a/src/ua_types.c b/src/ua_types.c
index c2c14cccac0..2fff32e18bb 100644
--- a/src/ua_types.c
+++ b/src/ua_types.c
@@ -1436,7 +1436,7 @@ extensionObjectOrder(const UA_ExtensionObject *p1, const UA_ExtensionObject *p2,
     case UA_EXTENSIONOBJECT_DECODED:
     default: {
             const UA_DataType *type1 = p1->content.decoded.type;
-            const UA_DataType *type2 = p1->content.decoded.type;
+            const UA_DataType *type2 = p2->content.decoded.type;
             if(type1 != type2)
                 return ((uintptr_t)type1 < (uintptr_t)type2) ? UA_ORDER_LESS : UA_ORDER_MORE;
             if(!type1)