diff --git a/doc/make.py b/doc/make.py
index 7df050d13ad4..8e37ec7f6e36 100755
--- a/doc/make.py
+++ b/doc/make.py
@@ -89,20 +89,20 @@ def copytree(src, dst, symlinks=False, ignore=None):
                 copy2(srcname, dstname)
         # catch the Error from the recursive copytree so that we can
         # continue with other files
-        except Error, err:
+        except Error as err:
             errors.extend(err.args[0])
-        except EnvironmentError, why:
+        except EnvironmentError as why:
             errors.append((srcname, dstname, str(why)))
     try:
         copystat(src, dst)
-    except OSError, why:
+    except OSError as why:
         if WindowsError is not None and isinstance(why, WindowsError):
             # Copying file access times may fail on Windows
             pass
         else:
             errors.extend((src, dst, str(why)))
     if errors:
-        raise Error, errors
+        raise Error(errors)
 
 ### End compatibility block for pre-v2.6 ###