diff --git a/.changeset/green-badgers-switch.md b/.changeset/green-badgers-switch.md
new file mode 100644
index 00000000000..ef057a33da4
--- /dev/null
+++ b/.changeset/green-badgers-switch.md
@@ -0,0 +1,5 @@
+---
+'@shopify/polaris': patch
+---
+
+Fixed an issue with the `primary` variant styles conflicting with the `tertiary` variant in `Button`
diff --git a/polaris-react/src/components/Button/Button.tsx b/polaris-react/src/components/Button/Button.tsx
index 33128d430da..9c881f1e76f 100644
--- a/polaris-react/src/components/Button/Button.tsx
+++ b/polaris-react/src/components/Button/Button.tsx
@@ -129,7 +129,6 @@ export function Button({
     styles.Button,
     variant === 'primary' && styles.primary,
     variant === 'plain' && styles.plain,
-    variant === 'tertiary' && styles.primary,
     variant === 'tertiary' && styles.tertiary,
     variant === 'monochromePlain' && styles.monochrome,
     variant === 'monochromePlain' && styles.plain,