diff --git a/procedures/phal/check_host_running.cpp b/procedures/phal/check_host_running.cpp
index 2ae3fba..d096193 100644
--- a/procedures/phal/check_host_running.cpp
+++ b/procedures/phal/check_host_running.cpp
@@ -42,7 +42,7 @@
     {
         phal_init();
     }
-    catch (std::exception& ex)
+    catch (const std::exception& ex)
     {
         // This should "never" happen so just throw the exception and let
         // our systemd error handling process this
@@ -119,7 +119,7 @@
     {
         phal_init();
     }
-    catch (std::exception& ex)
+    catch (const std::exception& ex)
     {
         // This should "never" happen so just throw the exception and let
         // our systemd error handling process this
diff --git a/procedures/phal/import_devtree.cpp b/procedures/phal/import_devtree.cpp
index 6d8adc4..d1cff3e 100644
--- a/procedures/phal/import_devtree.cpp
+++ b/procedures/phal/import_devtree.cpp
@@ -82,7 +82,7 @@
             fs::remove_all(path);
         }
     }
-    catch (fs::filesystem_error& e)
+    catch (const fs::filesystem_error& e)
     { // Log message and continue. Data already applied successfully.
         log<level::ERR>(fmt::format("File({}) delete failed Error:({})",
                                     DEVTREE_EXP_FILE, e.what())
diff --git a/procedures/phal/start_host.cpp b/procedures/phal/start_host.cpp
index 12eddc3..37a14ef 100644
--- a/procedures/phal/start_host.cpp
+++ b/procedures/phal/start_host.cpp
@@ -179,7 +179,7 @@
         phal_init();
         ipl_set_type(iplType);
     }
-    catch (std::exception& ex)
+    catch (const std::exception& ex)
     {
         log<level::ERR>("Exception raised during init PHAL",
                         entry("EXCEPTION=%s", ex.what()));