diff --git a/src/main.cpp b/src/main.cpp
index eb96b13..27f9b6f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -71,7 +71,7 @@
                 phosphor::logging::entry("RET=%d", ret));
         }
     }
-    catch (std::exception& e)
+    catch (const std::exception& e)
     {
         phosphor::logging::log<phosphor::logging::level::ERR>(e.what());
         ret = -1;