diff --git a/cadquery/CQ.py b/cadquery/CQ.py
index d2a5d8e..d723ee4 100644
--- a/cadquery/CQ.py
+++ b/cadquery/CQ.py
@@ -679,7 +679,7 @@ class CQ(object):
             startPt = obj.Center()
             endPt = startPt + endVec
             obj.rotate(startPt,endPt,angleDegrees)
-        
+
         return self.each(_rot, False)
 
     def translate(self,vec):
diff --git a/cadquery/freecad_impl/importers.py b/cadquery/freecad_impl/importers.py
index 9a4243e..c8786d3 100644
--- a/cadquery/freecad_impl/importers.py
+++ b/cadquery/freecad_impl/importers.py
@@ -20,7 +20,7 @@
     a string containing the model content.
 """
 import cadquery
-from .shapes import Shape, Compound
+from .shapes import Shape
 
 import FreeCAD
 import Part
diff --git a/tests/TestImporters.py b/tests/TestImporters.py
index 6cb8390..edee5d5 100644
--- a/tests/TestImporters.py
+++ b/tests/TestImporters.py
@@ -16,39 +16,39 @@ if sys.platform.startswith("win"):
 else:
     OUTDIR = "/tmp"
 
+
 class TestImporters(BaseTest):
+    def importBox(self, importType, fileName):
+        """
+        Exports a simple box to a STEP file and then imports it again
+        :param importType: The type of file we're importing (STEP, STL, etc)
+        :param fileName: The path and name of the file to write to
+        """
+        #We're importing a STEP file
+        if importType == importers.ImportTypes.STEP:
+            #We first need to build a simple shape to export
+            shape = Workplane("XY").box(1, 2, 3).val()
 
-	def importBox(self, importType,fileName):
-		"""
-		Exports a simple box to a STEP file and then imports it again
-		:param importType: The type of file we're importing (STEP, STL, etc)
-		:param fileName: The path and name of the file to write to
-		"""
-		#We're importing a STEP file
-		if importType == importers.ImportTypes.STEP:
-			#We first need to build a simple shape to export
-			shape = Workplane("XY").box(1,2,3).val()
+            #Export the shape to a temporary file
+            shape.exportStep(fileName)
 
-			#Export the shape to a temporary file
-			shape.exportStep(fileName)
+            # Reimport the shape from the new STEP file
+            importedShape = importers.importShape(importType,fileName)
 
-			# Reimport the shape from the new STEP file
-			importedShape = importers.importShape(importType,fileName)
+            #Check to make sure we got a solid back
+            self.assertTrue(importedShape.val().ShapeType() == "Solid")
 
-			#Check to make sure we got a solid back
-			self.assertTrue(importedShape.val().ShapeType() == "Solid")
+            #Check the number of faces and vertices per face to make sure we have a box shape
+            self.assertTrue(importedShape.faces("+X").size() == 1 and importedShape.faces("+X").vertices().size() == 4)
+            self.assertTrue(importedShape.faces("+Y").size() == 1 and importedShape.faces("+Y").vertices().size() == 4)
+            self.assertTrue(importedShape.faces("+Z").size() == 1 and importedShape.faces("+Z").vertices().size() == 4)
 
-			#Check the number of faces and vertices per face to make sure we have a box shape
-			self.assertTrue(importedShape.faces("+X").size() == 1 and importedShape.faces("+X").vertices().size() == 4)
-			self.assertTrue(importedShape.faces("+Y").size() == 1 and importedShape.faces("+Y").vertices().size() == 4)
-			self.assertTrue(importedShape.faces("+Z").size() == 1 and importedShape.faces("+Z").vertices().size() == 4)
-
-	def testSTEP(self):
-		"""
-		Tests STEP file import
-		"""
-		self.importBox(importers.ImportTypes.STEP, OUTDIR + "/tempSTEP.step")
+    def testSTEP(self):
+        """
+        Tests STEP file import
+        """
+        self.importBox(importers.ImportTypes.STEP, OUTDIR + "/tempSTEP.step")
 
 if __name__ == '__main__':
-	import unittest
-	unittest.main()
+    import unittest
+    unittest.main()