diff --git a/fsl/data/imagewrapper.py b/fsl/data/imagewrapper.py
index 591002f455a4afe01e5ca5e97add890f2e32790d..54bc712898195eeb6dbec5ff60959b1219d8d4f9 100644
--- a/fsl/data/imagewrapper.py
+++ b/fsl/data/imagewrapper.py
@@ -443,7 +443,8 @@ class ImageWrapper(notifier.Notifier):
             lowVol, highVol = slices[self.__numRealDims - 1]
 
             for vol in range(lowVol, highVol):
-                self.__coverage[:, :, vol] = np.nan
+                self.__coverage[:, :, vol]    = np.nan
+                self.__volRanges[     vol, :] = np.nan
 
         self.__expandCoverage(slices)