diff --git a/source/blender/blenkernel/intern/library.c b/source/blender/blenkernel/intern/library.c
index 64d9a23b6a6..834e7de5811 100644
--- a/source/blender/blenkernel/intern/library.c
+++ b/source/blender/blenkernel/intern/library.c
@@ -1146,7 +1146,7 @@ static int check_for_dupid(ListBase *lb, ID *id, char *name)
 			/* this would overflow name buffer */
 			left[16] = 0;
 			/* left_len = 16; */ /* for now this isnt used again */
-			memcpy(name, left, sizeof(char) * 16);
+			memcpy(name, left, sizeof(char) * 17);
 			continue;
 		}
 		/* this format specifier is from hell... */