diff --git a/ChangeLog b/ChangeLog
index ee86f30a80..6ebd9ba029 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Thu Sep 29 19:21:02 2016  Pete Higgins  <pete@peterhiggins.org>
+
+	* thread_sync.c (Init_thread_sync): Remove confusing doc comments,
+	  which are picked up by rdoc unexpectedly, from Queue and
+	  SizedQueue.  [Fix GH-1450]
+
 Wed Sep 28 23:14:19 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* lib/pstore.rb (PStore::CHECKSUM_ALGO): find available hashing
diff --git a/thread_sync.c b/thread_sync.c
index d7975beeff..3b2286ab35 100644
--- a/thread_sync.c
+++ b/thread_sync.c
@@ -1274,11 +1274,11 @@ Init_thread_sync(void)
     rb_define_method(rb_cQueue, "length", rb_queue_length, 0);
     rb_define_method(rb_cQueue, "num_waiting", rb_queue_num_waiting, 0);
 
-    rb_define_alias(rb_cQueue, "enq", "push");    /* Alias for #push. */
-    rb_define_alias(rb_cQueue, "<<", "push");     /* Alias for #push. */
-    rb_define_alias(rb_cQueue, "deq", "pop");     /* Alias for #pop. */
-    rb_define_alias(rb_cQueue, "shift", "pop");   /* Alias for #pop. */
-    rb_define_alias(rb_cQueue, "size", "length"); /* Alias for #length. */
+    rb_define_alias(rb_cQueue, "enq", "push");
+    rb_define_alias(rb_cQueue, "<<", "push");
+    rb_define_alias(rb_cQueue, "deq", "pop");
+    rb_define_alias(rb_cQueue, "shift", "pop");
+    rb_define_alias(rb_cQueue, "size", "length");
 
     rb_cSizedQueue = rb_struct_define_without_accessor_under(
 	rb_cThread,
@@ -1294,10 +1294,10 @@ Init_thread_sync(void)
     rb_define_method(rb_cSizedQueue, "clear", rb_szqueue_clear, 0);
     rb_define_method(rb_cSizedQueue, "num_waiting", rb_szqueue_num_waiting, 0);
 
-    rb_define_alias(rb_cSizedQueue, "enq", "push");  /* Alias for #push. */
-    rb_define_alias(rb_cSizedQueue, "<<", "push");   /* Alias for #push. */
-    rb_define_alias(rb_cSizedQueue, "deq", "pop");   /* Alias for #pop. */
-    rb_define_alias(rb_cSizedQueue, "shift", "pop"); /* Alias for #pop. */
+    rb_define_alias(rb_cSizedQueue, "enq", "push");
+    rb_define_alias(rb_cSizedQueue, "<<", "push");
+    rb_define_alias(rb_cSizedQueue, "deq", "pop");
+    rb_define_alias(rb_cSizedQueue, "shift", "pop");
 
     /* CVar */
     rb_cConditionVariable = rb_struct_define_without_accessor_under(