diff --git a/addons/web/static/src/core/model_field_selector/model_field_selector_popover.scss b/addons/web/static/src/core/model_field_selector/model_field_selector_popover.scss
index 5f74b038a04..5f24d88f1af 100644
--- a/addons/web/static/src/core/model_field_selector/model_field_selector_popover.scss
+++ b/addons/web/static/src/core/model_field_selector/model_field_selector_popover.scss
@@ -1,5 +1,10 @@
-.o_popover_field_selector .popover-arrow::after {
-    border-bottom-color: map-get($theme-colors, 'primary');
+.o_popover_field_selector {
+    &.o-popover-top > .popover-arrow::after {
+        border-top-color: map-get($theme-colors, 'primary');
+    }
+    &.o-popover-bottom > .popover-arrow::after {
+        border-bottom-color: map-get($theme-colors, 'primary');
+    }
 }
 
 .o_model_field_selector_popover {