diff --git a/fhem/FHEM/13_KS300.pm b/fhem/FHEM/13_KS300.pm
index 855fb3c89..b32d62d42 100644
--- a/fhem/FHEM/13_KS300.pm
+++ b/fhem/FHEM/13_KS300.pm
@@ -205,6 +205,7 @@ KS300_Parse($$)
     $v[3] = "$a[22]$a[21]" + 0;
     $v[4] = "$a[20]$a[19].$a[18]" + 0;
     $v[4] = sprintf("%0.1f", $v[4]);
+    $v[4] = -$v[4] if(hex($v[8]) & 8); # Negative temp
     $v[5] = ((hex($a[17]) & 0x2) || $haverain) ? "yes" : "no";
     $v[6] = $a[29];
     $v[7] = $a[16];
@@ -220,8 +221,6 @@ KS300_Parse($$)
       }
     }
     
-    # Negative temp
-    $v[4] = -$v[4] if(hex($v[8]) & 8);
 
     Log3 $def, 4, "KS300 $dev: $msg";