diff --git a/nibabel/benchmarks/bench_arrayproxy_slicing.py b/nibabel/benchmarks/bench_arrayproxy_slicing.py
index a824822d3c..321a0779d5 100644
--- a/nibabel/benchmarks/bench_arrayproxy_slicing.py
+++ b/nibabel/benchmarks/bench_arrayproxy_slicing.py
@@ -191,7 +191,7 @@ def testfunc():
     data[:, 1] = [r[4] for r in results]
     try:
         data[:, 2] = [r[3] / r[4] for r in results]
-    except:
+    except ZeroDivisionError:
         data[:, 2] = np.nan
     data[:, 3] = [r[5] - r[6] for r in results]
 
diff --git a/nibabel/ecat.py b/nibabel/ecat.py
index 6b193acdcc..3c0957e11d 100644
--- a/nibabel/ecat.py
+++ b/nibabel/ecat.py
@@ -468,13 +468,13 @@ def get_series_framenumbers(mlist):
     mlist_nframes = len(frames_order)
     trueframenumbers = np.arange(nframes - mlist_nframes, nframes)
     frame_dict = {}
-    try:
-        for frame_stored, (true_order, _) in frames_order.items():
-            # frame as stored in file -> true number in series
+    for frame_stored, (true_order, _) in frames_order.items():
+        # frame as stored in file -> true number in series
+        try:
             frame_dict[frame_stored] = trueframenumbers[true_order] + 1
-        return frame_dict
-    except:
-        raise IOError('Error in header or mlist order unknown')
+        except IndexError:
+            raise IOError('Error in header or mlist order unknown')
+    return frame_dict
 
 
 def read_subheaders(fileobj, mlist, endianness):
diff --git a/nibabel/tests/test_image_api.py b/nibabel/tests/test_image_api.py
index d71fbcdb30..be270795e9 100644
--- a/nibabel/tests/test_image_api.py
+++ b/nibabel/tests/test_image_api.py
@@ -377,9 +377,9 @@ def validate_shape(self, imaker, params):
 
     def validate_shape_deprecated(self, imaker, params):
         # Check deprecated get_shape API
+        img = imaker()
         with clear_and_catch_warnings() as w:
             warnings.simplefilter('always', DeprecationWarning)
-            img = imaker()
             assert_equal(img.get_shape(), params['shape'])
             assert_equal(len(w), 1)
 
diff --git a/nibabel/tripwire.py b/nibabel/tripwire.py
index 3850281587..e31cfe7258 100644
--- a/nibabel/tripwire.py
+++ b/nibabel/tripwire.py
@@ -24,7 +24,7 @@ def is_tripwire(obj):
         obj.any_attribute
     except TripWireError:
         return True
-    except:
+    except Exception:
         pass
     return False