diff --git a/src/app/shared/custom-connection/custom-connection.ts b/src/app/shared/custom-connection/custom-connection.ts
index b9a5dac..0256620 100644
--- a/src/app/shared/custom-connection/custom-connection.ts
+++ b/src/app/shared/custom-connection/custom-connection.ts
@@ -22,7 +22,7 @@ import { BiasComparisonViewStateService } from '@services/bias/bias-comparison-v
   template: `
     <svg data-testid="connection" [attr.data-connection-id]="connectionId" [attr.data-loop-back]="isLoopBack || null"
       [attr.data-connection-kind]="connectionKind" [attr.data-selected]="isSelected || null"
-      [style.z-index]="isSelected ? 100 : 1">
+      [style.z-index]="isSelected ? 100 : null">
       <path
         [class.connection-readonly]="isReadonly"
         [attr.d]="drawnPath"