diff --git a/lib/waterline-schema/joinTables.js b/lib/waterline-schema/joinTables.js
index f2b557c..bcd31d0 100644
--- a/lib/waterline-schema/joinTables.js
+++ b/lib/waterline-schema/joinTables.js
@@ -203,7 +203,8 @@ JoinTables.prototype.buildTable = function(columns) {
   if(!table.connection) {
     var err = "A 'dominant' property was not supplied for the two collections in a many-to-many relationship. " +
         "One side of the relationship between '" + c1.collection + "' and '" + c2.collection + "' needs a " +
-        "'dominant: true' flag set so a join table can be created on the correct connection.";
+        "'dominant: true' flag set so a join table can be created on the correct connection " +
+        "and ensure that both models explicity have the connection set.";
 
     throw new Error(err);
   }