diff --git a/Makefile.am b/Makefile.am
index 4910ff3804454c3602fe74d8445f299441c923b6..5c5c6b66f1a5517451a8d74e70ca6eb789f661f6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,7 +3,7 @@
 # - Keep files sorted; one line per file.
 # - Directories in lib/ must have their own *dir variable (see hypervisor).
 # - All directories must be listed DIRS.
-# - Use autogen.sh to generate Makefile.in and configure script
+# - Use autogen.sh to generate Makefile.in and configure script.
 
 # Automake doesn't export these variables before version 1.10.
 abs_top_builddir = @abs_top_builddir@
diff --git a/lib/opcodes.py b/lib/opcodes.py
index 3900e97f6ad910ef2df43f5751791d00ecda39ed..c5062a39920d80ba4864ee49bcdaa5b995f6d973 100644
--- a/lib/opcodes.py
+++ b/lib/opcodes.py
@@ -428,11 +428,13 @@ class OpExportInstance(OpCode):
   OP_ID = "OP_BACKUP_EXPORT"
   __slots__ = ["instance_name", "target_node", "shutdown"]
 
+
 class OpRemoveExport(OpCode):
   """Remove an instance's export."""
   OP_ID = "OP_BACKUP_REMOVE"
   __slots__ = ["instance_name"]
 
+
 # Tags opcodes
 class OpGetTags(OpCode):
   """Returns the tags of the given object."""