diff --git a/theories/base.v b/theories/base.v
index e77bf21d56df89e677ddf5181db84e1e3664f44c..6f02d571db28f866a8a251f4caa11f742cea015e 100644
--- a/theories/base.v
+++ b/theories/base.v
@@ -964,7 +964,7 @@ Hint Mode Alter - - ! : typeclass_instances.
Instance: Params (@alter) 5.
Arguments alter {_ _ _ _} _ !_ !_ / : simpl nomatch, assert.
-(** The function [alter f k m] should update the value at key [k] using the
+(** The function [partial_alter f k m] should update the value at key [k] using the
function [f], which is called with the original value at key [k] or [None]
if [k] is not a member of [m]. The value at [k] should be deleted if [f]
yields [None]. *)
@@ -1092,7 +1092,7 @@ Hint Mode Size ! : typeclass_instances.
Arguments size {_ _} !_ / : simpl nomatch, assert.
Instance: Params (@size) 2.
-(** The class [Collection M] axiomatizes a type constructor [M] that can be
+(** The class [CollectionMonad M] axiomatizes a type constructor [M] that can be
used to construct a collection [M A] with elements of type [A]. The advantage
of this class, compared to [Collection], is that it also axiomatizes the
the monadic operations. The disadvantage, is that not many inhabits are