diff -r 133528cfd528 -r 3cb5769059f4 master/slave.c
--- a/master/slave.c	Thu Feb 28 11:07:40 2008 +0000
+++ b/master/slave.c	Thu Feb 28 11:23:34 2008 +0000
@@ -568,7 +568,7 @@
             }
             sync = &slave->sii.syncs[pdo->sync_index];
 
-            if (ec_pdo_mapping_add_pdo(&sync->mapping, pdo))
+            if (ec_pdo_mapping_add_pdo_copy(&sync->mapping, pdo))
                 return -1;
 
             sync->mapping_source = EC_SYNC_MAPPING_SII;