diff --git a/FHEM/20_OWFS.pm b/FHEM/20_OWFS.pm
index 9812ba3aa..265cadfe1 100644
--- a/FHEM/20_OWFS.pm
+++ b/FHEM/20_OWFS.pm
@@ -194,6 +194,12 @@ OWFS_Define($$)
 
   Log 3, "OWFS opened $dev for $name";
 
+  Log 1, "OWFS ########################################";
+  Log 1, "OWFS # IMPORTANT NOTE:";
+  Log 1, "OWFS # This module is deprecated and will be removed in a future release!";
+  Log 1, "OWFS # Please use OWServer / OWDevice.";
+  Log 1, "OWFS ########################################";
+
   $hash->{DeviceName} = $dev;
   $hash->{STATE}="";
   my $ret  = OWFS_DoInit($hash);
diff --git a/FHEM/21_OWTEMP.pm b/FHEM/21_OWTEMP.pm
index 1cc6a4e8b..f527eab18 100644
--- a/FHEM/21_OWTEMP.pm
+++ b/FHEM/21_OWTEMP.pm
@@ -473,6 +473,12 @@ OWTEMP_Define($$)
     InternalTimer(gettimeofday()+$hash->{INTERVAL}, "OWTEMP_GetUpdate", $hash, 0);
   }
 
+  Log 1, "OWTEMP ########################################";
+  Log 1, "OWTEMP # IMPORTANT NOTE:";
+  Log 1, "OWTEMP # This module is deprecated and will be removed in a future release!";
+  Log 1, "OWTEMP # Please use OWServer / OWDevice.";
+  Log 1, "OWTEMP ########################################";
+
   return undef;
 }