diff --git a/labelme/widgets/canvas.py b/labelme/widgets/canvas.py
index a78f073d3..7ae3ae350 100644
--- a/labelme/widgets/canvas.py
+++ b/labelme/widgets/canvas.py
@@ -957,7 +957,7 @@ def keyPressEvent(self, ev):
                 self.current = None
                 self.drawingPolygon.emit(False)
                 self.update()
-            elif key == QtCore.Qt.Key_Return and self.canCloseShape():
+            elif key in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Space) and self.canCloseShape():
                 self.finalise()
             elif modifiers == QtCore.Qt.AltModifier:
                 self.snapping = False