diff --git a/bytehook/src/main/cpp/bh_elf_manager.c b/bytehook/src/main/cpp/bh_elf_manager.c
index 830cfd2..e9d19de 100644
--- a/bytehook/src/main/cpp/bh_elf_manager.c
+++ b/bytehook/src/main/cpp/bh_elf_manager.c
@@ -200,9 +200,6 @@ void bh_elf_manager_refresh(bh_elf_manager_t *self, bool sync_clean, bh_elf_mana
     }
   }
 
-  // unlock ELFs-tree
-  pthread_rwlock_unlock(&self->elfs_lock);
-
   // if we are in sync-clean status, no other iterate or hooks can be performed at the same time
   if (sync_clean) {
     // remove and destroy all unreferenced ELF object in the abandoned list
@@ -212,6 +209,9 @@ void bh_elf_manager_refresh(bh_elf_manager_t *self, bool sync_clean, bh_elf_mana
     }
   }
 
+  // unlock ELFs-tree
+    pthread_rwlock_unlock(&self->elfs_lock);
+
   // do callback for newborn ELFs (no need to lock)
   if (NULL != cb) {
     TAILQ_FOREACH_SAFE(elf, &new_elfs, link_list, elf_tmp) {