diff --git a/src/security/conf/checker.hpp b/src/security/conf/checker.hpp
index 040d343..3c4ceb2 100644
--- a/src/security/conf/checker.hpp
+++ b/src/security/conf/checker.hpp
@@ -188,18 +188,18 @@
             }
           }
       }
-    catch (tlv::Error& e)
-      {
-        onValidationFailed(packet.shared_from_this(),
-                           "Cannot decode signature");
-        return -1;
-      }
     catch (KeyLocator::Error& e)
       {
         onValidationFailed(packet.shared_from_this(),
                            "Cannot decode KeyLocator");
         return -1;
       }
+    catch (tlv::Error& e)
+      {
+        onValidationFailed(packet.shared_from_this(),
+                           "Cannot decode signature");
+        return -1;
+      }
 
     std::string failInfo;
     if (m_keyLocatorChecker->check(packet, signature.getKeyLocator(), failInfo))