diff --git a/src/DateHandler/Makefile.am b/src/DateHandler/Makefile.am
index 1ddcce889..f6c903408 100644
--- a/src/DateHandler/Makefile.am
+++ b/src/DateHandler/Makefile.am
@@ -22,6 +22,7 @@ pkgdata_PYTHON = \
 	_Date_pt.py\
 	_Date_ru.py\
 	_Date_sk.py\
+	_Date_sl.py\
 	_Date_sr.py\
 	_Date_sv.py\
 	_DateDisplay.py\
diff --git a/src/plugins/rel/Makefile.am b/src/plugins/rel/Makefile.am
index 8236d91c5..e170b14d8 100644
--- a/src/plugins/rel/Makefile.am
+++ b/src/plugins/rel/Makefile.am
@@ -21,7 +21,8 @@ pkgdata_PYTHON = \
 	rel_pl.py\
 	rel_pt.py\
 	rel_ru.py\
-	rel_sk.py\
+	rel_sk.py\
+	rel_sl.py\
 	rel_sv.py
 
 pkgpyexecdir = @pkgpyexecdir@/plugins/rel