diff --git a/src/bin/initdb/initdb.c b/src/bin/initdb/initdb.c
index fc1fb363e74..8b84e230f1c 100644
--- a/src/bin/initdb/initdb.c
+++ b/src/bin/initdb/initdb.c
@@ -3356,7 +3356,7 @@ main(int argc, char *argv[])
 		if (endptr == str_wal_segment_size_mb || *endptr != '\0')
 			pg_fatal("argument of --wal-segsize must be a number");
 		if (!IsValidWalSegSize(wal_segment_size_mb * 1024 * 1024))
-			pg_fatal("argument of --wal-segsize must be a power of 2 between 1 and 1024");
+			pg_fatal("argument of --wal-segsize must be a power of two between 1 and 1024");
 	}
 
 	get_restricted_token();
diff --git a/src/bin/pg_resetwal/pg_resetwal.c b/src/bin/pg_resetwal/pg_resetwal.c
index e7ef2b8bd0c..ca57713f63b 100644
--- a/src/bin/pg_resetwal/pg_resetwal.c
+++ b/src/bin/pg_resetwal/pg_resetwal.c
@@ -295,7 +295,7 @@ main(int argc, char *argv[])
 				if (endptr == optarg || *endptr != '\0' || errno != 0)
 					pg_fatal("argument of --wal-segsize must be a number");
 				if (!IsValidWalSegSize(set_wal_segsize))
-					pg_fatal("argument of --wal-segsize must be a power of 2 between 1 and 1024");
+					pg_fatal("argument of --wal-segsize must be a power of two between 1 and 1024");
 				break;
 
 			default: