diff --git a/datamodels/2.x/itop-portal-base/portal/public/css/variables.scss b/datamodels/2.x/itop-portal-base/portal/public/css/variables.scss
index 5bcce1d65a..72d0a21aa9 100644
--- a/datamodels/2.x/itop-portal-base/portal/public/css/variables.scss
+++ b/datamodels/2.x/itop-portal-base/portal/public/css/variables.scss
@@ -612,7 +612,7 @@ $popover-arrow-color:                 $popover-bg !default;
 //** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1) !default;
 //** Popover outer arrow color
-$popover-arrow-outer-color:           fadein($popover-border-color, 5%) !default;
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.05) !default;
 //** Popover outer arrow fallback color
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%) !default;