diff --git a/src/material/tabs/ink-bar.ts b/src/material/tabs/ink-bar.ts
index b0ec2fa54361..6309ae647afd 100644
--- a/src/material/tabs/ink-bar.ts
+++ b/src/material/tabs/ink-bar.ts
@@ -185,7 +185,7 @@ export function mixinInkBarItem<
 }
 
 /**
- * Interface for a a MatInkBar positioner method, defining the positioning and width of the ink
+ * Interface for a MatInkBar positioner method, defining the positioning and width of the ink
  * bar in a set of tabs.
  */
 export interface _MatInkBarPositioner {