diff --git a/ChangeLog b/ChangeLog
index a82bcef659..fdcdafe8e0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Sep  4 15:05:34 CEST 2008 Daniel Veillard <veillard@redhat.com>
+
+	* src/storage_backend_logical.c: fix a miscalculation of command line
+	  size for vgcreate, patch from Jim Fehlig
+
 Thu Sep  4 11:43:20 BST 2008 Daniel P. Berrange <berrange@redhat.com>
 
 	Augeas config file support
diff --git a/src/storage_backend_logical.c b/src/storage_backend_logical.c
index d182b5e36d..744848d26b 100644
--- a/src/storage_backend_logical.c
+++ b/src/storage_backend_logical.c
@@ -351,7 +351,7 @@ virStorageBackendLogicalBuildPool(virConnectPtr conn,
     memset(zeros, 0, sizeof(zeros));
 
     /* XXX multiple pvs */
-    if (VIR_ALLOC_N(vgargv, 1) < 0) {
+    if (VIR_ALLOC_N(vgargv, 3 + pool->def->source.ndevice) < 0) {
         virStorageReportError(conn, VIR_ERR_NO_MEMORY, "%s", _("command line"));
         return -1;
     }