diff --git a/syncplay/ui/GuiConfiguration.py b/syncplay/ui/GuiConfiguration.py
index 7c43076..4a1d1e9 100755
--- a/syncplay/ui/GuiConfiguration.py
+++ b/syncplay/ui/GuiConfiguration.py
@@ -655,6 +655,9 @@ class ConfigDialog(QtWidgets.QDialog):
         self.serverpassLabel = QLabel(getMessage("password-label"), self)
         self.roomsCombobox = QtWidgets.QComboBox(self)
         self.roomsCombobox.setEditable(True)
+        caseSensitiveCompleter = QtWidgets.QCompleter("", self)
+        caseSensitiveCompleter.setCaseSensitivity(Qt.CaseSensitive)
+        self.roomsCombobox.setCompleter(caseSensitiveCompleter)
         self.fillRoomsCombobox()
         self.roomsCombobox.setEditText(config['room'])
         self.usernameLabel = QLabel(getMessage("name-label"), self)
diff --git a/syncplay/ui/gui.py b/syncplay/ui/gui.py
index f2195e9..24890d4 100755
--- a/syncplay/ui/gui.py
+++ b/syncplay/ui/gui.py
@@ -1491,6 +1491,9 @@ class MainWindow(QtWidgets.QMainWindow):
         window.listLayout.addWidget(window.listSplit)
         window.roomsCombobox = QtWidgets.QComboBox(self)
         window.roomsCombobox.setEditable(True)
+        caseSensitiveCompleter = QtWidgets.QCompleter("", self)
+        caseSensitiveCompleter.setCaseSensitivity(Qt.CaseSensitive)
+        window.roomsCombobox.setCompleter(caseSensitiveCompleter)
         #window.roomsCombobox.setMaxLength(constants.MAX_ROOM_NAME_LENGTH)
         window.roomButton = QtWidgets.QPushButton(
             QtGui.QPixmap(resourcespath + 'door_in.png'),