diff --git a/theme/src/main/resources/com/github/weisj/darklaf/theme/high_contrast_dark/high_contrast_dark_ui.properties b/theme/src/main/resources/com/github/weisj/darklaf/theme/high_contrast_dark/high_contrast_dark_ui.properties
index e235a1a4..68a7fc02 100644
--- a/theme/src/main/resources/com/github/weisj/darklaf/theme/high_contrast_dark/high_contrast_dark_ui.properties
+++ b/theme/src/main/resources/com/github/weisj/darklaf/theme/high_contrast_dark/high_contrast_dark_ui.properties
@@ -28,3 +28,4 @@ TabbedPane.selectedHoverBackground      = %backgroundHover
 ToolTip.paintShadow                     = false
 ScrollBar.fadeEndColor                  = %ScrollBar.fadeStartColor
 RootPane.borderInsets                   = 1,1,1,1
+PopupMenu.border                        = javax.swing.border.EmptyBorder.EmptyBorderUIResource
diff --git a/theme/src/main/resources/com/github/weisj/darklaf/theme/high_contrast_light/high_contrast_light_ui.properties b/theme/src/main/resources/com/github/weisj/darklaf/theme/high_contrast_light/high_contrast_light_ui.properties
index f1d9a508..fccded92 100644
--- a/theme/src/main/resources/com/github/weisj/darklaf/theme/high_contrast_light/high_contrast_light_ui.properties
+++ b/theme/src/main/resources/com/github/weisj/darklaf/theme/high_contrast_light/high_contrast_light_ui.properties
@@ -31,3 +31,4 @@ TabFrameTab.selectedForeground          = %textSelectionForeground
 TabFrameTab.hoverForeground             = %textSelectionForeground
 ScrollBar.fadeEndColor                  = %ScrollBar.fadeStartColor
 RootPane.borderInsets                   = 1,1,1,1
+PopupMenu.border                        = javax.swing.border.EmptyBorder.EmptyBorderUIResource