insert null at end of strncpy target array.
diff --git a/src/mixer_plugin.c b/src/mixer_plugin.c
index b7fcc0b..a07b8f6 100644
--- a/src/mixer_plugin.c
+++ b/src/mixer_plugin.c
@@ -83,6 +83,7 @@
 
     strncpy((char *)id->name, (char *)ctl->name,
             sizeof(id->name) - 1);
+    ((char *)id->name)[sizeof(id->name) - 1] = '\0';
 
     return 0;
 }
@@ -101,6 +102,7 @@
     strncpy(einfo->value.enumerated.name,
             val->texts[einfo->value.enumerated.item],
             sizeof(einfo->value.enumerated.name) - 1);
+    einfo->value.enumerated.name[sizeof(einfo->value.enumerated.name) - 1] = '\0';
 
     return 0;
 }