diff --git a/pixelegg/css/pixelegg.css b/pixelegg/css/pixelegg.css
index c21d1f9d00..af5587a949 100644
--- a/pixelegg/css/pixelegg.css
+++ b/pixelegg/css/pixelegg.css
@@ -1335,9 +1335,6 @@ span.ui-icon-search {
 }
 /*###########################################*/
 /*Dialog: calendar edit series*/
-.ui-dialog-buttonpane {
-  background-color: #679FD2;
-}
 .ui-dialog-buttonset button.ui-button-text-only {
   background-color: #CDCDCD;
   background: inherit;
diff --git a/pixelegg/less/jquery-ui.less b/pixelegg/less/jquery-ui.less
index e5f0570897..ffc95f742a 100755
--- a/pixelegg/less/jquery-ui.less
+++ b/pixelegg/less/jquery-ui.less
@@ -288,7 +288,7 @@ span.ui-icon-search {
 
 /*###########################################*/
 /*Dialog: calendar edit series*/
-.ui-dialog-buttonpane {background-color: @egw_color_2_e;}
+.ui-dialog-buttonpane {}
 
 .ui-dialog-buttonset{
 	button.ui-button-text-only {