diff --git a/bouquin/editor.py b/bouquin/editor.py
index 7fe55c0..a5b7643 100644
--- a/bouquin/editor.py
+++ b/bouquin/editor.py
@@ -28,9 +28,11 @@ class Editor(QTextEdit):
         cursor.mergeCharFormat(fmt)
         self.mergeCurrentCharFormat(fmt)
 
-    @Slot(QFont.Weight)
-    def apply_weight(self, weight):
+    @Slot()
+    def apply_weight(self):
+        cur = self.currentCharFormat()
         fmt = QTextCharFormat()
+        weight = QFont.Weight.Normal if cur.fontWeight() == QFont.Weight.Bold else QFont.Weight.Bold
         fmt.setFontWeight(weight)
         self.merge_on_sel(fmt)
 
diff --git a/bouquin/toolbar.py b/bouquin/toolbar.py
index 93c7ee3..a3a8cef 100644
--- a/bouquin/toolbar.py
+++ b/bouquin/toolbar.py
@@ -6,7 +6,7 @@ from PySide6.QtWidgets import QToolBar
 
 
 class ToolBar(QToolBar):
-    boldRequested = Signal(QFont.Weight)
+    boldRequested = Signal()
     italicRequested = Signal()
     underlineRequested = Signal()
     strikeRequested = Signal()
@@ -24,7 +24,7 @@ class ToolBar(QToolBar):
         # Bold
         bold = QAction("Bold", self)
         bold.setShortcut("Ctrl+B")
-        bold.triggered.connect(lambda: self.boldRequested.emit(QFont.Weight.Bold))
+        bold.triggered.connect(self.boldRequested)
 
         italic = QAction("Italic", self)
         italic.setShortcut("Ctrl+I")