diff --git a/qt/play_word_mediator.cpp b/qt/play_word_mediator.cpp
index 3f4b114..a229cc2 100644
--- a/qt/play_word_mediator.cpp
+++ b/qt/play_word_mediator.cpp
@@ -146,50 +146,49 @@ void PlayWordMediator::lineEditPlay_returnPressed()
     else
     {
         // Try to be as explicit as possible concerning the error
-        QString msg = _q("Cannot play '%1' at position '%2':\n")
+        QString msg = _q("Cannot play '%1' at position '%2':\n%3")
             .arg(m_lineEditPlay.text()).arg(coords);
         switch (res)
         {
             case 1:
-                msg += _q("Some letters are not valid for the current dictionary");
+                msg = msg.arg(_q("Some letters are not valid for the current dictionary"));
                 break;
             case 2:
-                msg += _q("Invalid coordinates");
+                msg = msg.arg(_q("Invalid coordinates"));
                 break;
             case 3:
-                msg += _q("The word does not exist");
+                msg = msg.arg(_q("The word does not exist"));
                 break;
             case 4:
-                msg += _q("The rack doesn't contain the letters needed to play this word");
+                msg = msg.arg(_q("The rack doesn't contain the letters needed to play this word"));
                 break;
             case 5:
-                msg += _q("The word is part of a longer one");
+                msg = msg.arg(_q("The word is part of a longer one"));
                 break;
             case 6:
-                msg += _q("The word tries to replace an existing letter");
+                msg = msg.arg(_q("The word tries to replace an existing letter"));
                 break;
             case 7:
-                msg += _q("An orthogonal word is not valid");
+                msg = msg.arg(_q("An orthogonal word is not valid"));
                 break;
             case 8:
-                msg += _q("The word is already present on the board at these coordinates");
+                msg = msg.arg(_q("The word is already present on the board at these coordinates"));
                 break;
             case 9:
-                msg += _q("A word cannot be isolated (not connected to the placed words)");
+                msg = msg.arg(_q("A word cannot be isolated (not connected to the placed words)"));
                 break;
             case 10:
-                msg += _q("The first word of the game must be horizontal");
+                msg = msg.arg(_q("The first word of the game must be horizontal"));
                 break;
             case 11:
-                msg += _q("The first word of the game must cover the H8 square");
+                msg = msg.arg(_q("The first word of the game must cover the H8 square"));
                 break;
             case 12:
-                msg += _q("The word is going out of the board");
+                msg = msg.arg(_q("The word is going out of the board"));
                 break;
             default:
-                msg += _q("Incorrect or misplaced word (%1)").arg(1);
+                msg = msg.arg(_q("Incorrect or misplaced word"));
         }
-        // FIXME: the error is too generic
         emit notifyProblem(msg);
     }
 }
diff --git a/qt/player_widget.cpp b/qt/player_widget.cpp
index f5807df..d7b94a9 100644
--- a/qt/player_widget.cpp
+++ b/qt/player_widget.cpp
@@ -159,12 +159,21 @@ void PlayerWidget::on_lineEditChange_returnPressed()
         emit gameUpdated();
     else
     {
-        // FIXME: the error is too generic
         QString msg;
         if (inputLetters == "")
-            msg = _q("Cannot pass turn (%1)").arg(res);
+            msg = _q("Cannot pass turn:\n%1");
         else
-            msg = _q("Cannot change letters '%1' (%2)").arg(inputLetters).arg(res);
+            msg = _q("Cannot change letters '%1':\n%2").arg(inputLetters);
+        if (res == 1)
+            msg = msg.arg(_q("Changing letters is not allowed when there are less than 7 tiles left in the bag"));
+        else if (res == 2)
+            msg = msg.arg(_q("The rack of the current player does not contain all the listed letters"));
+        else if (res == 3)
+            msg = msg.arg(_q("The game is already finished!"));
+        else if (res == 3)
+            msg = msg.arg(_q("Some letters are invalid for the current dictionary"));
+        else
+            msg = msg.arg(_q("Unknwon error"));
         emit notifyProblem(msg);
     }
 }