diff --git a/_CoqProject b/_CoqProject
index a8156fdf6a0096eb5bdaad53dd2800d5e9c5e314..1cd9e93ada52e25e0b3421c75f9b8bc62056a450 100644
--- a/_CoqProject
+++ b/_CoqProject
@@ -19,6 +19,7 @@ theories/lang/notation.v
 theories/lang/memcpy.v
 theories/lang/new_delete.v
 theories/lang/swap.v
+theories/lang/lock.v
 theories/typing/base.v
 theories/typing/lft_contexts.v
 theories/typing/type.v
diff --git a/theories/lang/lock.v b/theories/lang/lock.v
index cf2c520e02265bbf097bbbd3ee62c03b470e8ff2..1c578eecdf5eea3280c8740f2a7917c454a22fa2 100644
--- a/theories/lang/lock.v
+++ b/theories/lang/lock.v
@@ -74,7 +74,7 @@ Section proof.
   Proof. by iIntros "#$". Qed.
 
   (** The main proofs. *)
-  Lemma lock_proto_create (R : vProp) l (b : bool) : 
+  Lemma lock_proto_create (R : vProp) l (b : bool) :
     l ↦ #b -∗ (if b then True else ▷ R) ==∗
       ∃ γ, lock_proto_lc l γ R R ∗ ▷ lock_proto_inv l γ R.
   Proof.