diff --git a/tools/deps_guard/elf_file_mgr/elf_file_mgr.py b/tools/deps_guard/elf_file_mgr/elf_file_mgr.py
index f672550e..d2931933 100755
--- a/tools/deps_guard/elf_file_mgr/elf_file_mgr.py
+++ b/tools/deps_guard/elf_file_mgr/elf_file_mgr.py
@@ -244,6 +244,7 @@ class ElfFileMgr(object):
         print("    Got %d dependencies" % self._dep_idx)
 
     def __build_deps_tree_for_one_elf(self, elf):
+        elf["missing"] = []
         for lib, line in elf.library_depends():
             dep_elf = self.get_elf_by_name(lib)
             if not dep_elf: