diff --git a/src/Makefile.am b/src/Makefile.am
index 69aebd7ed..29333e3f2 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -6,6 +6,7 @@ gajimsrcdir = $(gajim_srcdir)
 nobase_dist_gajimsrc_PYTHON = \
 	$(srcdir)/*.py \
 	$(srcdir)/common/*.py \
+	$(srcdir)/common/protocol/*.py \
 	$(srcdir)/common/xmpp/*.py \
 	$(srcdir)/common/zeroconf/*.py \
 	$(srcdir)/command_system/*.py \