diff --git a/ChangeLog b/ChangeLog
index ab536d02..b9743e8d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,11 @@
 VERSION 0.8.1cvs
 ================
 
+2005-12-04  Vincent Richard  <vincent@vincent-richard.net>
+
+ * posixChildProcess.cpp: fixed a bug in argument vector; last argument
+   was not NULL (thanks to Bertrand Benoit).
+
 2005-11-27  Vincent Richard  <vincent@vincent-richard.net>
 
  * maildirUtils.cpp: fixed problem with ':' in filename on Windows
diff --git a/src/platforms/posix/posixChildProcess.cpp b/src/platforms/posix/posixChildProcess.cpp
index 05681bb5..ea91ed25 100644
--- a/src/platforms/posix/posixChildProcess.cpp
+++ b/src/platforms/posix/posixChildProcess.cpp
@@ -247,7 +247,7 @@ void posixChildProcess::start(const std::vector <string> args, const int flags)
 	m_argArray = argv;   // to free later
 
 	argv[0] = m_processPath.getLastComponent().getBuffer().c_str();
-	argv[args.size()] = NULL;
+	argv[args.size() + 1] = NULL;
 
 	for (unsigned int i = 0 ; i < m_argVector.size() ; ++i)
 		argv[i + 1] = m_argVector[i].c_str();