diff --git a/CHANGED b/CHANGED
index 97000f8bc..4937bfb82 100644
--- a/CHANGED
+++ b/CHANGED
@@ -471,3 +471,4 @@
   - feature: getstate command from Martin (25.12)
   - bugfix:  at drifts for relative timespecs
   - bugfix:  Add IODev to CUL/EM/CUL_WS/HMS/KS300
+  - bugfix:  support for second correction factor for EMWZ in 15_CUL_EM added
\ No newline at end of file
diff --git a/FHEM/15_CUL_EM.pm b/FHEM/15_CUL_EM.pm
index ef866dfad..43ebdf76e 100755
--- a/FHEM/15_CUL_EM.pm
+++ b/FHEM/15_CUL_EM.pm
@@ -39,6 +39,7 @@ CUL_EM_Define($$)
   if($a[2] >= 1 && $a[2] <= 4) {                # EMWZ: nRotation in 5 minutes
     my $c = (int(@a) > 3 ? $a[3] : 150);
     $hash->{corr1} = (12/$c);
+    $c = (int(@a) > 4 ? $a[4] : 150);
     $hash->{corr2} = (12/$c);
 
   } elsif($a[2] >= 5 && $a[2] <= 8) {           # EMEM