diff --git a/libavfilter/drawutils.h b/libavfilter/drawutils.h
index df4169575b..5ffffe77c1 100644
--- a/libavfilter/drawutils.h
+++ b/libavfilter/drawutils.h
@@ -51,8 +51,8 @@ typedef struct FFDrawContext {
     unsigned nb_planes;
     int pixelstep[MAX_PLANES]; /*< offset between pixels */
     uint8_t comp_mask[MAX_PLANES]; /*< bitmask of used non-alpha components */
-    uint8_t hsub[MAX_PLANES];  /*< horizontal subsamling */
-    uint8_t vsub[MAX_PLANES];  /*< vertical subsamling */
+    uint8_t hsub[MAX_PLANES];  /*< horizontal subsampling */
+    uint8_t vsub[MAX_PLANES];  /*< vertical subsampling */
     uint8_t hsub_max;
     uint8_t vsub_max;
 } FFDrawContext;