diff --git a/src/Marten/Internal/Storage/DocumentStorage.cs b/src/Marten/Internal/Storage/DocumentStorage.cs
index 674bffc48a..10f0e31558 100644
--- a/src/Marten/Internal/Storage/DocumentStorage.cs
+++ b/src/Marten/Internal/Storage/DocumentStorage.cs
@@ -162,7 +162,7 @@ public void TruncateDocumentStorage(IMartenDatabase database)
         }
         catch (PostgresException e)
         {
-            if (!e.Message.Contains("does not exist"))
+            if (e.SqlState != PostgresErrorCodes.UndefinedTable)
             {
                 throw;
             }
@@ -178,7 +178,7 @@ public async Task TruncateDocumentStorageAsync(IMartenDatabase database, Cancell
         }
         catch (PostgresException e)
         {
-            if (!e.Message.Contains("does not exist"))
+            if (e.SqlState != PostgresErrorCodes.UndefinedTable)
             {
                 throw;
             }