diff --git a/src/include/access/tableam.h b/src/include/access/tableam.h
index bf3a472018..92a799652d 100644
--- a/src/include/access/tableam.h
+++ b/src/include/access/tableam.h
@@ -691,7 +691,7 @@ typedef struct TableAmRoutine
 	 * block using the TsmRoutine's NextSampleTuple() callback.
 	 *
 	 * The callback needs to perform visibility checks, and only return
-	 * visible tuples. That obviously can mean calling NextSampletuple()
+	 * visible tuples. That obviously can mean calling NextSampleTuple()
 	 * multiple times.
 	 *
 	 * The TsmRoutine interface assumes that there's a maximum offset on a