diff --git a/pyjeeves/models/raw.py b/pyjeeves/models/raw.py
index 98497ef..a42c78f 100644
--- a/pyjeeves/models/raw.py
+++ b/pyjeeves/models/raw.py
@@ -151,8 +151,9 @@ class Article(RawBaseModel):
         for unit in self.ArticleUnit:
             if unit.AltEnhetOrderStd == "1" and not spec_conv:
                 return unit
-            elif (spec_conv and (unit.AltEnhetOmrFaktor == spec_conv or
-                                 unit.ArticleAlternativeUnit.AltEnhetOmrFaktor == spec_conv)):
+            elif (spec_conv and unit.AltEnhetOrder == "1" and (
+                    unit.AltEnhetOmrFaktor == spec_conv or
+                    unit.ArticleAlternativeUnit.AltEnhetOmrFaktor == spec_conv)):
                 return unit
 
     def get_unit_conv(self):