diff --git a/extra/assoc-deques/assoc-deques-docs.factor b/extra/assoc-deques/assoc-deques-docs.factor
deleted file mode 100644
index d8f305d51d..0000000000
--- a/extra/assoc-deques/assoc-deques-docs.factor
+++ /dev/null
@@ -1,32 +0,0 @@
-! Copyright (C) 2008 Doug Coleman.
-! See http://factorcode.org/license.txt for BSD license.
-USING: help.markup help.syntax io.streams.string ;
-IN: assoc-deques
-
-HELP: <assoc-deque>
-{ $description "Constructs a new " { $link assoc-deque } " from two existing data structures." } ;
-
-HELP: <unique-max-heap>
-{ $values
-    
-     { "unique-heap" assoc-deque } }
-{ $description "Creates a new " { $link assoc-deque } " where the assoc is a hashtable and the deque is a max-heap." } ;
-
-HELP: <unique-min-heap>
-{ $values
-    
-     { "unique-heap" assoc-deque } }
-{ $description "Creates a new " { $link assoc-deque } " where the assoc is a hashtable and the deque is a min-heap." } ;
-
-HELP: assoc-deque
-{ $description "A data structure containing an assoc and a deque to get certain properties with better time constraints at the expense of more space and complexity. For instance, a hashtable and a heap can be combined into one assoc-deque to get a sorted data structure with O(1) lookup. Operations on assoc-deques should update both the assoc and the deque." } ;
-
-ARTICLE: "assoc-deques" "Associative deques"
-"The " { $vocab-link "assoc-deques" } " vocabulary combines exists to synthesize data structures with better time properties than either of the two component data structures alone." $nl
-"Associative deque constructor:"
-{ $subsection <assoc-deque> }
-"Unique heaps:"
-{ $subsection <unique-min-heap> }
-{ $subsection <unique-max-heap> } ;
-
-ABOUT: "assoc-deques"
diff --git a/extra/assoc-deques/assoc-deques.factor b/extra/assoc-deques/assoc-deques.factor
deleted file mode 100644
index a23e632b8b..0000000000
--- a/extra/assoc-deques/assoc-deques.factor
+++ /dev/null
@@ -1,31 +0,0 @@
-! Copyright (C) 2008 Doug Coleman.
-! See http://factorcode.org/license.txt for BSD license.
-USING: accessors assocs deques hashtables heaps kernel ;
-IN: assoc-deques
-
-TUPLE: assoc-deque assoc deque ;
-
-C: <assoc-deque> assoc-deque
-
-: <unique-min-heap> ( -- unique-heap )
-    H{ } clone <min-heap> <assoc-deque> ;
-
-: <unique-max-heap> ( -- unique-heap )
-    H{ } clone <max-heap> <assoc-deque> ;
-
-M: assoc-deque heap-push* ( value key assoc-deque -- entry )
-    pick over assoc>> key? [
-        3drop f
-    ] [
-        [ assoc>> swapd set-at ] [ deque>> heap-push* ] 3bi
-    ] if ;
-
-M: assoc-deque heap-pop ( assoc-deque -- value key )
-    [ deque>> heap-pop ] keep
-    [ over ] dip assoc>> delete-at ;
-
-M: assoc-deque heap-peek ( assoc-deque -- value key )
-    deque>> heap-peek ;
-
-M: assoc-deque heap-empty? ( assoc-deque -- value key )
-    deque>> heap-empty? ;
diff --git a/extra/assoc-heaps/assoc-heaps-docs.factor b/extra/assoc-heaps/assoc-heaps-docs.factor
new file mode 100644
index 0000000000..6a80bcc6c6
--- /dev/null
+++ b/extra/assoc-heaps/assoc-heaps-docs.factor
@@ -0,0 +1,32 @@
+! Copyright (C) 2008 Doug Coleman.
+! See http://factorcode.org/license.txt for BSD license.
+USING: help.markup help.syntax io.streams.string ;
+IN: assoc-heaps
+
+HELP: <assoc-heap>
+{ $description "Constructs a new " { $link assoc-heap } " from two existing data structures." } ;
+
+HELP: <unique-max-heap>
+{ $values
+    
+     { "unique-heap" assoc-heap } }
+{ $description "Creates a new " { $link assoc-heap } " where the assoc is a hashtable and the heap is a max-heap." } ;
+
+HELP: <unique-min-heap>
+{ $values
+    
+     { "unique-heap" assoc-heap } }
+{ $description "Creates a new " { $link assoc-heap } " where the assoc is a hashtable and the heap is a min-heap." } ;
+
+HELP: assoc-heap
+{ $description "A data structure containing an assoc and a heap to get certain properties with better time constraints at the expense of more space and complexity. For instance, a hashtable and a heap can be combined into one assoc-heap to get a sorted data structure with O(1) lookup. Operations on assoc-heap should update both the assoc and the heap." } ;
+
+ARTICLE: "assoc-heaps" "Associative heaps"
+"The " { $vocab-link "assoc-heaps" } " vocabulary combines exists to synthesize data structures with better time properties than either of the two component data structures alone." $nl
+"Associative heap constructor:"
+{ $subsection <assoc-heap> }
+"Unique heaps:"
+{ $subsection <unique-min-heap> }
+{ $subsection <unique-max-heap> } ;
+
+ABOUT: "assoc-heaps"
diff --git a/extra/assoc-deques/assoc-deques-tests.factor b/extra/assoc-heaps/assoc-heaps-tests.factor
similarity index 62%
rename from extra/assoc-deques/assoc-deques-tests.factor
rename to extra/assoc-heaps/assoc-heaps-tests.factor
index fe9d8840bc..6ea3fe14a4 100644
--- a/extra/assoc-deques/assoc-deques-tests.factor
+++ b/extra/assoc-heaps/assoc-heaps-tests.factor
@@ -1,4 +1,4 @@
 ! Copyright (C) 2008 Doug Coleman.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: tools.test assoc-deques ;
-IN: assoc-deques.tests
+USING: tools.test assoc-heaps ;
+IN: assoc-heaps.tests
diff --git a/extra/assoc-heaps/assoc-heaps.factor b/extra/assoc-heaps/assoc-heaps.factor
new file mode 100644
index 0000000000..d2154002b9
--- /dev/null
+++ b/extra/assoc-heaps/assoc-heaps.factor
@@ -0,0 +1,31 @@
+! Copyright (C) 2008 Doug Coleman.
+! See http://factorcode.org/license.txt for BSD license.
+USING: accessors assocs hashtables heaps kernel ;
+IN: assoc-heaps
+
+TUPLE: assoc-heap assoc heap ;
+
+C: <assoc-heap> assoc-heap
+
+: <unique-min-heap> ( -- unique-heap )
+    H{ } clone <min-heap> <assoc-heap> ;
+
+: <unique-max-heap> ( -- unique-heap )
+    H{ } clone <max-heap> <assoc-heap> ;
+
+M: assoc-heap heap-push* ( value key assoc-heap -- entry )
+    pick over assoc>> key? [
+        3drop f
+    ] [
+        [ assoc>> swapd set-at ] [ heap>> heap-push* ] 3bi
+    ] if ;
+
+M: assoc-heap heap-pop ( assoc-heap -- value key )
+    [ heap>> heap-pop ] keep
+    [ over ] dip assoc>> delete-at ;
+
+M: assoc-heap heap-peek ( assoc-heap -- value key )
+    heap>> heap-peek ;
+
+M: assoc-heap heap-empty? ( assoc-heap -- value key )
+    heap>> heap-empty? ;
diff --git a/extra/assoc-deques/authors.txt b/extra/assoc-heaps/authors.txt
similarity index 100%
rename from extra/assoc-deques/authors.txt
rename to extra/assoc-heaps/authors.txt
diff --git a/extra/spider/spider.factor b/extra/spider/spider.factor
index 8f60a0d521..7b84f8e16a 100644
--- a/extra/spider/spider.factor
+++ b/extra/spider/spider.factor
@@ -3,7 +3,7 @@
 USING: accessors fry html.parser html.parser.analyzer
 http.client kernel tools.time sets assocs sequences
 concurrency.combinators io threads namespaces math multiline
-heaps math.parser inspector urls assoc-deques logging
+heaps math.parser inspector urls assoc-heaps logging
 combinators.short-circuit continuations calendar prettyprint ;
 IN: spider