diff --git a/plab/filelist.go b/plab/filelist.go
index 444fcaf02b3eff5cbeb1d6d79bda3cd988b60d2b..c247be86ca679cb3858774bb09e282c9794b63ce 100644
--- a/plab/filelist.go
+++ b/plab/filelist.go
@@ -50,6 +50,9 @@ func mapizator(list []string) map[string]string {
 
 	for _, v := range list {
 		elements := strings.Split(v, "=")
+		if len(elements) != 2 {
+			continue
+		}
 		list_map[elements[0]] = elements[1]
 	}
 	return list_map