diff --git a/substrate/frame/membership/README.md b/substrate/frame/membership/README.md
index a769be497050e1c2f0fc6e2be2d218f6239fff02..3499a3f864e480f634de42cb4fc3eece1bc2ee51 100644
--- a/substrate/frame/membership/README.md
+++ b/substrate/frame/membership/README.md
@@ -1,6 +1,6 @@
 # Membership Module
 
-Allows control of membership of a set of `AccountId`s, useful for managing membership of of a
+Allows control of membership of a set of `AccountId`s, useful for managing membership of a
 collective. A prime member may be set.
 
-License: Apache-2.0
\ No newline at end of file
+License: Apache-2.0
diff --git a/substrate/frame/membership/src/lib.rs b/substrate/frame/membership/src/lib.rs
index af2f2ddcf42f0229fccd0a02925b4193da67c3fb..4191bbcc5d86ec680c6c3f759fb11f36e70dcd3b 100644
--- a/substrate/frame/membership/src/lib.rs
+++ b/substrate/frame/membership/src/lib.rs
@@ -17,7 +17,7 @@
 
 //! # Membership Module
 //!
-//! Allows control of membership of a set of `AccountId`s, useful for managing membership of of a
+//! Allows control of membership of a set of `AccountId`s, useful for managing membership of a
 //! collective. A prime member may be set
 
 // Ensure we're `no_std` when compiling for Wasm.