diff --git a/src/core/CCList.ml b/src/core/CCList.ml
index 6fe811e0..e02de8e2 100644
--- a/src/core/CCList.ml
+++ b/src/core/CCList.ml
@@ -898,17 +898,17 @@ module Assoc = struct
     | (y,z)::l' ->
         if eq x y then z else search_exn eq l' x
 
-  let get_exn ?(eq=(=)) l x = search_exn eq l x
+  let get_exn ?(eq=(=)) x l = search_exn eq l x
 
-  let get ?(eq=(=)) l x =
+  let get ?(eq=(=)) x l =
     try Some (search_exn eq l x)
     with Not_found -> None
 
   (*$T
-    Assoc.get [1, "1"; 2, "2"] 1 = Some "1"
-    Assoc.get [1, "1"; 2, "2"] 2 = Some "2"
-    Assoc.get [1, "1"; 2, "2"] 3 = None
-    Assoc.get [] 42 = None
+    Assoc.get 1 [1, "1"; 2, "2"] = Some "1"
+    Assoc.get 2 [1, "1"; 2, "2"] = Some "2"
+    Assoc.get 3 [1, "1"; 2, "2"] = None
+    Assoc.get 42 [] = None
   *)
 
   (* search for a binding for [x] in [l], and calls [f x (Some v) rest]
@@ -921,27 +921,27 @@ module Assoc = struct
           then f x (Some y') (List.rev_append acc l')
           else search_set eq ((x',y')::acc) l' x ~f
 
-  let set ?(eq=(=)) l x y =
+  let set ?(eq=(=)) x y l =
     search_set eq [] l x
       ~f:(fun x _ l -> (x,y)::l)
 
   (*$T
-    Assoc.set [1,"1"; 2, "2"] 2 "two" |> List.sort Pervasives.compare \
+    Assoc.set 2 "two" [1,"1"; 2, "2"] |> List.sort Pervasives.compare \
       = [1, "1"; 2, "two"]
-    Assoc.set [1,"1"; 2, "2"] 3 "3" |> List.sort Pervasives.compare \
+    Assoc.set 3 "3" [1,"1"; 2, "2"] |> List.sort Pervasives.compare \
       = [1, "1"; 2, "2"; 3, "3"]
   *)
 
-  let mem ?(eq=(=)) l x =
+  let mem ?(eq=(=)) x l =
     try ignore (search_exn eq l x); true
     with Not_found -> false
 
   (*$T
-    Assoc.mem [1,"1"; 2,"2"; 3, "3"] 1
-    not (Assoc.mem [1,"1"; 2,"2"; 3, "3"] 4)
+    Assoc.mem 1 [1,"1"; 2,"2"; 3, "3"]
+    not (Assoc.mem 4 [1,"1"; 2,"2"; 3, "3"])
   *)
 
-  let update ?(eq=(=)) l x ~f =
+  let update ?(eq=(=)) ~f x l =
     search_set eq [] l x
       ~f:(fun x opt_y rest ->
         match f opt_y with
@@ -949,17 +949,17 @@ module Assoc = struct
         | Some y' -> (x,y') :: rest)
   (*$=
     [1,"1"; 2,"22"] \
-      (Assoc.update [1,"1"; 2,"2"] 2 \
+      (Assoc.update 2 [1,"1"; 2,"2"] \
         ~f:(function Some "2" -> Some "22" | _ -> assert false) |> lsort)
     [1,"1"; 3,"3"] \
-      (Assoc.update [1,"1"; 2,"2"; 3,"3"] 2 \
+      (Assoc.update 2 [1,"1"; 2,"2"; 3,"3"] \
         ~f:(function Some "2" -> None | _ -> assert false) |> lsort)
     [1,"1"; 2,"2"; 3,"3"] \
-      (Assoc.update [1,"1"; 2,"2"] 3 \
+      (Assoc.update 3 [1,"1"; 2,"2"] \
         ~f:(function None -> Some "3" | _ -> assert false) |> lsort)
   *)
 
-  let remove ?(eq=(=)) l x =
+  let remove ?(eq=(=)) x l =
     search_set eq [] l x
       ~f:(fun _ opt_y rest -> match opt_y with
           | None -> l  (* keep as is *)
@@ -967,11 +967,11 @@ module Assoc = struct
 
   (*$=
     [1,"1"] \
-      (Assoc.remove [1,"1"; 2,"2"] 2 |> lsort)
+      (Assoc.remove 2 [1,"1"; 2,"2"] |> lsort)
     [1,"1"; 3,"3"] \
-      (Assoc.remove [1,"1"; 2,"2"; 3,"3"] 2  |> lsort)
+      (Assoc.remove 2 [1,"1"; 2,"2"; 3,"3"] |> lsort)
     [1,"1"; 2,"2"] \
-      (Assoc.remove [1,"1"; 2,"2"] 3 |> lsort)
+      (Assoc.remove 3 [1,"1"; 2,"2"] |> lsort)
   *)
 end
 
diff --git a/src/core/CCList.mli b/src/core/CCList.mli
index 26970729..2ed996c5 100644
--- a/src/core/CCList.mli
+++ b/src/core/CCList.mli
@@ -315,29 +315,29 @@ val repeat : int -> 'a t -> 'a t
 module Assoc : sig
   type ('a, 'b) t = ('a*'b) list
 
-  val get : ?eq:('a->'a->bool) -> ('a,'b) t -> 'a -> 'b option
+  val get : ?eq:('a->'a->bool) -> 'a -> ('a,'b) t -> 'b option
   (** Find the element *)
 
-  val get_exn : ?eq:('a->'a->bool) -> ('a,'b) t -> 'a -> 'b
-  (** Same as [get]
+  val get_exn : ?eq:('a->'a->bool) -> 'a -> ('a,'b) t -> 'b
+  (** Same as [get], but unsafe
       @raise Not_found if the element is not present *)
 
-  val set : ?eq:('a->'a->bool) -> ('a,'b) t -> 'a -> 'b -> ('a,'b) t
+  val set : ?eq:('a->'a->bool) -> 'a -> 'b -> ('a,'b) t -> ('a,'b) t
   (** Add the binding into the list (erase it if already present) *)
 
-  val mem : ?eq:('a->'a->bool) -> ('a,_) t -> 'a -> bool
-  (** [mem l x] returns [true] iff [x] is a key in [l]
+  val mem : ?eq:('a->'a->bool) -> 'a -> ('a,_) t -> bool
+  (** [mem x l] returns [true] iff [x] is a key in [l]
       @since 0.16 *)
 
   val update :
-    ?eq:('a->'a->bool) -> ('a,'b) t -> 'a -> f:('b option -> 'b option) -> ('a,'b) t
-  (** [update l k ~f] updates [l] on the key [k], by calling [f (get l k)]
+    ?eq:('a->'a->bool) -> f:('b option -> 'b option) -> 'a -> ('a,'b) t -> ('a,'b) t
+  (** [update k ~f l] updates [l] on the key [k], by calling [f (get l k)]
       and removing [k] if it returns [None], mapping [k] to [v'] if it
       returns [Some v']
       @since 0.16 *)
 
-  val remove : ?eq:('a->'a->bool) -> ('a,'b) t -> 'a -> ('a,'b) t
-  (** [remove l k] removes the first occurrence of [k] from [l].
+  val remove : ?eq:('a->'a->bool) -> 'a -> ('a,'b) t -> ('a,'b) t
+  (** [remove x l] removes the first occurrence of [k] from [l].
       @since 0.17 *)
 end