diff --git a/vpx/internal/vpx_codec_internal.h b/vpx/internal/vpx_codec_internal.h
index 470ea7344c0b140b1a74d8ff7d2c8881f729a663..a1ff1921ea7959775a5de78d7d353c6daef660b6 100644
--- a/vpx/internal/vpx_codec_internal.h
+++ b/vpx/internal/vpx_codec_internal.h
@@ -332,7 +332,7 @@ typedef struct vpx_codec_priv_cb_pair
  * extended in one of two ways. First, a second, algorithm specific structure
  * can be allocated and the priv member pointed to it. Alternatively, this
  * structure can be made the first member of the algorithm specific structure,
- * and the pointer casted to the proper type.
+ * and the pointer cast to the proper type.
  */
 struct vpx_codec_priv
 {