diff --git a/dataverse_api/dataverse.py b/dataverse_api/dataverse.py
index 17c302f..8411593 100644
--- a/dataverse_api/dataverse.py
+++ b/dataverse_api/dataverse.py
@@ -81,7 +81,7 @@ def create_entity(
         if return_representation:
             headers["Prefer"] = "return=representation"
         if solution_name:
-            headers["MSCRM.SolutionName"] = solution_name
+            headers["MSCRM.SolutionUniqueName"] = solution_name
 
         return self._api_call(
             method=RequestMethod.POST,