diff --git a/src/View/Configure/Window.py b/src/View/Configure/Window.py
index c5ba5821..95307fd5 100644
--- a/src/View/Configure/Window.py
+++ b/src/View/Configure/Window.py
@@ -120,7 +120,9 @@ class ConfigureWindow(PamhyrDialog):
             editable_headers=["name", "comment", "minor", "medium"],
             data=self._stricklers,
             undo=self._undo_stack,
+            trad=self._trad_stricklers,
             display_manning=self._config.display_manning,
+            unique_names=True,
         )
 
     def setup_data(self):
diff --git a/src/View/Stricklers/Table.py b/src/View/Stricklers/Table.py
index 1e4a4c9a..32731b8e 100644
--- a/src/View/Stricklers/Table.py
+++ b/src/View/Stricklers/Table.py
@@ -31,7 +31,7 @@ from PyQt5.QtWidgets import (
     QDialogButtonBox, QPushButton, QLineEdit,
     QFileDialog, QTableView, QAbstractItemView,
     QUndoStack, QShortcut, QAction, QItemDelegate,
-    QComboBox,
+    QComboBox, QMessageBox,
 )
 
 from View.Tools.PamhyrTable import PamhyrTableModel
@@ -51,10 +51,19 @@ _translate = QCoreApplication.translate
 
 
 class TableModel(PamhyrTableModel):
-    def __init__(self, *args, display_manning=False, **kwargs):
+    def __init__(self, *args, display_manning=False, unique_names=False,
+                 **kwargs):
         self.display_manning = display_manning
+        self.unique_names = unique_names
         super(TableModel, self).__init__(*args, **kwargs)
 
+    def name_is_already_used(self, row, name):
+        current = self._data.get(row)
+        return any(
+            strickler is not current and strickler.name == name
+            for strickler in self._data.stricklers
+        )
+
     def get_true_data_row(self, row):
         el = self._data.get(row)
 
@@ -101,6 +110,18 @@ class TableModel(PamhyrTableModel):
         row = index.row()
         column = index.column()
 
+        if (
+            self._headers[column] == "name"
+            and self.unique_names
+            and self.name_is_already_used(row, str(value))
+        ):
+            QMessageBox.warning(
+                self._table_view,
+                self._trad["duplicate_name_title"],
+                self._trad["duplicate_name_message"]
+            )
+            return False
+
         try:
             if self._headers[column] == "name":
                 self._undo.push(
diff --git a/src/View/Stricklers/translate.py b/src/View/Stricklers/translate.py
index 5f50c535..ad2305d4 100644
--- a/src/View/Stricklers/translate.py
+++ b/src/View/Stricklers/translate.py
@@ -45,6 +45,13 @@ class StricklersTranslate(MainTranslate):
         self._dict["application_mannings"] = _translate(
             "Stricklers", "Manning coefficients of the application"
         )
+        self._dict["duplicate_name_title"] = _translate(
+            "Stricklers", "Name already used"
+        )
+        self._dict["duplicate_name_message"] = _translate(
+            "Stricklers",
+            "This name is already used by another coefficient."
+        )
 
         self._sub_dict["table_headers"] = {
             "name": self._dict["name"],