diff --git a/src/vppinfra/phash.c b/src/vppinfra/phash.c
index 14da522..f6eecaa 100644
--- a/src/vppinfra/phash.c
+++ b/src/vppinfra/phash.c
@@ -556,7 +556,7 @@
 
 	  /* tb_parent with v has either one or zero collisions. */
 
-	  /* add childb to the queue of reachable things */
+	  /* add child b to the queue of reachable things */
 	  if (tb_child)
 	    tb_child->water_b = high_water;
 	  pm->tabq[tail].b_q = tb_child ? tb_child - pm->tabb : ~0;