diff --git a/fsl/fslview/displaycontext.py b/fsl/fslview/displaycontext.py
index 3f0d17db577457a6862375a8daad972f451b5e71..4b047ebac5c0a576386182e56a1a78f188666695 100644
--- a/fsl/fslview/displaycontext.py
+++ b/fsl/fslview/displaycontext.py
@@ -565,7 +565,7 @@ class DisplayContext(props.HasProperties):
 
             for ax in range(3):
 
-                lo, hi = transform.axisBounds(img.shape, xform, ax)
+                lo, hi = transform.axisBounds(img.shape[:3], xform, ax)
 
                 if lo < minBounds[ax]: minBounds[ax] = lo
                 if hi > maxBounds[ax]: maxBounds[ax] = hi
diff --git a/fsl/utils/transform.py b/fsl/utils/transform.py
index 6304e6b186fb5c06b7835317b3ecb6c1c0108691..cf331bfa91deb5d219115c608137b8578a6f1046 100644
--- a/fsl/utils/transform.py
+++ b/fsl/utils/transform.py
@@ -25,7 +25,7 @@ def concat(x1, x2):
 
 def axisBounds(shape, xform, axis):
     """Returns the (lo, hi) bounds of the specified axis."""
-    x, y, z = shape
+    x, y, z = shape[:3]
 
     x -= 0.5
     y -= 0.5