diff --git a/fhem/fhem.pl b/fhem/fhem.pl
index 00a066af1..e015e63d9 100755
--- a/fhem/fhem.pl
+++ b/fhem/fhem.pl
@@ -109,6 +109,7 @@ sub WriteStatefile();
 sub XmlEscape($);
 sub addEvent($$);
 sub addToDevAttrList($$);
+sub delFromDevAttrList($$);
 sub addToAttrList($);
 sub addToWritebuffer($$@);
 sub attrSplit($);