diff --git a/source/api_cc/src/DeepPot.cc b/source/api_cc/src/DeepPot.cc
index 018c3aca09..bb39a9fd60 100644
--- a/source/api_cc/src/DeepPot.cc
+++ b/source/api_cc/src/DeepPot.cc
@@ -474,7 +474,7 @@ void DeepPot::init(const std::string& model,
   ntypes = get_scalar<int>("descrpt_attr/ntypes");
   try {
     ntypes_spin = get_scalar<int>("spin_attr/ntypes_spin");
-  } catch (deepmd::deepmd_exception) {
+  } catch (const deepmd::deepmd_exception) {
     ntypes_spin = 0;
   }
   dfparam = get_scalar<int>("fitting_attr/dfparam");
@@ -488,7 +488,7 @@ void DeepPot::init(const std::string& model,
   if (daparam > 0) {
     try {
       aparam_nall = get_scalar<bool>("fitting_attr/aparam_nall");
-    } catch (deepmd::deepmd_exception) {
+    } catch (const deepmd::deepmd_exception) {
       aparam_nall = false;
     }
   } else {
@@ -1331,7 +1331,7 @@ void DeepPotModelDevi::init(const std::vector<std::string>& models,
   ntypes = get_scalar<int>("descrpt_attr/ntypes");
   try {
     ntypes_spin = get_scalar<int>("spin_attr/ntypes_spin");
-  } catch (deepmd::deepmd_exception) {
+  } catch (const deepmd::deepmd_exception) {
     ntypes_spin = 0;
   }
   dfparam = get_scalar<int>("fitting_attr/dfparam");
@@ -1345,7 +1345,7 @@ void DeepPotModelDevi::init(const std::vector<std::string>& models,
   if (daparam > 0) {
     try {
       aparam_nall = get_scalar<bool>("fitting_attr/aparam_nall");
-    } catch (deepmd::deepmd_exception) {
+    } catch (const deepmd::deepmd_exception) {
       aparam_nall = false;
     }
   } else {