diff --git a/fhem/CHANGED b/fhem/CHANGED
index de0f71805..6a04e7f7b 100644
--- a/fhem/CHANGED
+++ b/fhem/CHANGED
@@ -555,3 +555,4 @@
   - bugfix:  DEFINED & INITIALIZED triggers.
   - feature: 20_OWFS.pm support for passive Devices e.g. DS9097 (see commandref.html)
   - bugfix:  21_OWTEMP.pm Defining a device now fail when no OWFS device was defined
+  - bugfix:  20_OWFS.pm crash fhem with PGM3
diff --git a/fhem/FHEM/20_OWFS.pm b/fhem/FHEM/20_OWFS.pm
index 9b470d5c3..4de233735 100644
--- a/fhem/FHEM/20_OWFS.pm
+++ b/fhem/FHEM/20_OWFS.pm
@@ -66,7 +66,7 @@ OWFS_Initialize($)
   $hash->{DefFn}      = "OWFS_Define";
   $hash->{UndefFn}    = "OWFS_Undef";
   $hash->{GetFn}      = "OWFS_Get";
-  $hash->{SetFn}      = "OWFS_Set";
+  #$hash->{SetFn}      = "OWFS_Set";
   $hash->{AttrList}   = "do_not_notify:1,0 dummy:1,0 temp-scale:C,F,K,R " .
                         "showtime:1,0 loglevel:0,1,2,3,4,5,6";
 }