diff --git a/nibabel/casting.py b/nibabel/casting.py
index 31e27d0e8..042a2f415 100644
--- a/nibabel/casting.py
+++ b/nibabel/casting.py
@@ -764,7 +764,7 @@ def able_int_type(values):
     >>> able_int_type([-1, 1]) == np.int8
     True
     """
-    if any([v % 1 for v in values]):
+    if any(v % 1 for v in values):
         return None
     mn = min(values)
     mx = max(values)