diff --git a/src/components/SplitButton/SplitButton.tsx b/src/components/SplitButton/SplitButton.tsx
index eea9937c..146d6bf1 100644
--- a/src/components/SplitButton/SplitButton.tsx
+++ b/src/components/SplitButton/SplitButton.tsx
@@ -241,7 +241,7 @@ const PrimaryButton = styled(BaseButton)<{
   $align?: Alignment;
   $fillWidth?: boolean;
 }>`
-  border: 1px solid transparent;
+  border: none;
   align-self: stretch;
   border-radius: 0;
   align-items: center;