diff --git a/scripts/coccinelle/locks/mini_lock.cocci b/scripts/coccinelle/locks/mini_lock.cocci
index 7641a29..3267d74 100644
--- a/scripts/coccinelle/locks/mini_lock.cocci
+++ b/scripts/coccinelle/locks/mini_lock.cocci
@@ -6,13 +6,14 @@
 /// function call that releases the lock.
 ///
 // Confidence: Moderate
-// Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
-// Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
-// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
+// Copyright: (C) 2010-2012 Nicolas Palix.  GPLv2.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.  GPLv2.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.  GPLv2.
 // URL: http://coccinelle.lip6.fr/
 // Comments:
 // Options: -no_includes -include_headers
 
+virtual context
 virtual org
 virtual report
 
@@ -57,7 +58,7 @@
 
 for(...;...;...) { <+... return@r ...; ...+> }
 
-@err@
+@err exists@
 expression E1;
 position prelocked.p;
 position up != prelocked.p1;
@@ -65,14 +66,14 @@
 identifier lock,unlock;
 @@
 
-lock(E1@p,...);
+*lock(E1@p,...);
 <+... when != E1
 if (...) {
   ... when != E1
-  return@r ...;
+*  return@r ...;
 }
 ...+>
-unlock@up(E1,...);
+*unlock@up(E1,...);
 
 @script:python depends on org@
 p << prelocked.p1;