diff --git a/skimage/viewer/canvastools/__init__.py b/skimage/viewer/canvastools/__init__.py
index a04d4188..326ce780 100644
--- a/skimage/viewer/canvastools/__init__.py
+++ b/skimage/viewer/canvastools/__init__.py
@@ -1 +1 @@
-from line_tool import LineTool, ThickLineTool
+from linetool import LineTool, ThickLineTool
diff --git a/skimage/viewer/canvastools/line_tool.py b/skimage/viewer/canvastools/linetool.py
similarity index 100%
rename from skimage/viewer/canvastools/line_tool.py
rename to skimage/viewer/canvastools/linetool.py