diff --git a/src/wallet/wallettool.cpp b/src/wallet/wallettool.cpp
--- a/src/wallet/wallettool.cpp
+++ b/src/wallet/wallettool.cpp
@@ -70,7 +70,7 @@
     try {
         bool first_run;
         load_wallet_ret = wallet_instance->LoadWallet(first_run);
-    } catch (const std::runtime_error) {
+    } catch (const std::runtime_error &) {
         fprintf(stderr,
                 "Error loading %s. Is wallet being used by another process?\n",
                 name.c_str());