diff --git a/pyqtgraph/graphicsItems/InfiniteLine.py b/pyqtgraph/graphicsItems/InfiniteLine.py
index b76b4483..2df84f47 100644
--- a/pyqtgraph/graphicsItems/InfiniteLine.py
+++ b/pyqtgraph/graphicsItems/InfiniteLine.py
@@ -325,6 +325,7 @@ class InfLineLabel(TextItem):
     def __init__(self, line, text="", movable=False, position=0.5, anchors=None, **kwds):
         self.line = line
         self.movable = movable
+        self.moving = False
         self.orthoPos = position  # text will always be placed on the line at a position relative to view bounds
         self.format = text
         self.line.sigPositionChanged.connect(self.valueChanged)