diff --git a/liblog/local_logger.c b/liblog/local_logger.c
index 522867d..563cb3f 100644
--- a/liblog/local_logger.c
+++ b/liblog/local_logger.c
@@ -222,6 +222,7 @@
       log->last[logId] = node->prev;
     }
     list_remove(node);
+    LOG_ALWAYS_FATAL_IF(node == log->last[logId], "corrupted list");
     free(e);
   }
   /* add entry to list */
diff --git a/liblog/logprint.c b/liblog/logprint.c
index b62f8b4..a2839bf 100644
--- a/liblog/logprint.c
+++ b/liblog/logprint.c
@@ -250,6 +250,7 @@
   while (!list_empty(&convertHead)) {
     struct listnode* node = list_head(&convertHead);
     list_remove(node);
+    LOG_ALWAYS_FATAL_IF(node == list_head(&convertHead), "corrupted list");
     free(node);
   }
 }