diff --git a/hgext/mq.py b/hgext/mq.py
--- a/hgext/mq.py
+++ b/hgext/mq.py
@@ -1583,7 +1583,7 @@ class queue:
                         text = sys.stdin.read()
                     else:
                         text = url.open(self.ui, filename).read()
-                except IOError:
+                except (OSError, IOError):
                     raise util.Abort(_("unable to read %s") % filename)
                 if not patchname:
                     patchname = normname(os.path.basename(filename))
diff --git a/tests/test-mq-qimport b/tests/test-mq-qimport
--- a/tests/test-mq-qimport
+++ b/tests/test-mq-qimport
@@ -25,7 +25,7 @@ hg init repo
 cd repo
 
 echo % qimport non-existing-file
-hg qimport non-existing-file 2>&1 | sed -e 's/\(No such file or directory:\) .*/\1/'
+hg qimport non-existing-file
 
 echo % import URL
 echo foo >> foo
diff --git a/tests/test-mq-qimport.out b/tests/test-mq-qimport.out
--- a/tests/test-mq-qimport.out
+++ b/tests/test-mq-qimport.out
@@ -1,5 +1,5 @@
 % qimport non-existing-file
-abort: No such file or directory:
+abort: unable to read non-existing-file
 % import URL
 adding url.diff to series file
 url.diff