diff --git a/dbus/dbusconfiguration.cpp b/dbus/dbusconfiguration.cpp
index 8e69455..e9a7991 100644
--- a/dbus/dbusconfiguration.cpp
+++ b/dbus/dbusconfiguration.cpp
@@ -98,7 +98,7 @@
         auto resp = bus.call(mapper);
         resp.read(respData);
     }
-    catch (sdbusplus::exception_t&)
+    catch (const sdbusplus::exception_t&)
     {
         // can't do anything without mapper call data
         throw std::runtime_error("ObjectMapper Call Failure");
@@ -129,7 +129,7 @@
                 auto resp = bus.call(getProfile);
                 resp.read(variantResp);
             }
-            catch (sdbusplus::exception_t&)
+            catch (const sdbusplus::exception_t&)
             {
                 throw std::runtime_error("Failure getting profile");
             }
@@ -376,7 +376,7 @@
         auto resp = bus.call(mapper);
         resp.read(respData);
     }
-    catch (sdbusplus::exception_t&)
+    catch (const sdbusplus::exception_t&)
     {
         // can't do anything without mapper call data
         throw std::runtime_error("ObjectMapper Call Failure");
@@ -440,7 +440,7 @@
             auto responce = bus.call(endpoint);
             responce.read(configuration);
         }
-        catch (sdbusplus::exception_t&)
+        catch (const sdbusplus::exception_t&)
         {
             // this shouldn't happen, probably means daemon crashed
             throw std::runtime_error("Error getting managed objects from " +
diff --git a/dbus/dbushelper.cpp b/dbus/dbushelper.cpp
index a192fa2..0e4ba67 100644
--- a/dbus/dbushelper.cpp
+++ b/dbus/dbushelper.cpp
@@ -147,7 +147,7 @@
         auto msg = _bus.call(critical);
         msg.read(criticalMap);
     }
-    catch (sdbusplus::exception_t&)
+    catch (const sdbusplus::exception_t&)
     {
         // do nothing, sensors don't have to expose critical thresholds
         return false;
diff --git a/dbus/dbuspassiveredundancy.cpp b/dbus/dbuspassiveredundancy.cpp
index 2ca8fde..57c3c50 100644
--- a/dbus/dbuspassiveredundancy.cpp
+++ b/dbus/dbuspassiveredundancy.cpp
@@ -59,7 +59,7 @@
               {
                   message.read(objectName, result);
               }
-              catch (sdbusplus::exception_t&)
+              catch (const sdbusplus::exception_t&)
               {
                   std::cerr << "Error reading match data";
                   return;
@@ -82,7 +82,7 @@
                   auto reply = passiveBus.call(methodCall);
                   reply.read(collection);
               }
-              catch (sdbusplus::exception_t&)
+              catch (const sdbusplus::exception_t&)
               {
                   std::cerr << "Error reading match data";
                   return;
@@ -121,7 +121,7 @@
         auto resp = passiveBus.call(mapper);
         resp.read(respData);
     }
-    catch (sdbusplus::exception_t&)
+    catch (const sdbusplus::exception_t&)
     {
         std::cerr << "Populate Failures Mapper Error\n";
         return;
@@ -156,7 +156,7 @@
                 auto data = passiveBus.call(call);
                 data.read(getAll);
             }
-            catch (sdbusplus::exception_t&)
+            catch (const sdbusplus::exception_t&)
             {
                 std::cerr << "Populate Failures Mapper Error\n";
                 return;