diff --git a/libpfr/src/pfr.cpp b/libpfr/src/pfr.cpp
index abced98..77320fa 100644
--- a/libpfr/src/pfr.cpp
+++ b/libpfr/src/pfr.cpp
@@ -305,7 +305,7 @@
     {
         gpioLine.request({__FUNCTION__, gpiod::line_request::DIRECTION_INPUT});
     }
-    catch (std::exception& e)
+    catch (const std::exception& e)
     {
         phosphor::logging::log<phosphor::logging::level::ERR>(
             "Failed to request the GPIO line",
@@ -317,7 +317,7 @@
     {
         *value = gpioLine.get_value();
     }
-    catch (std::exception& e)
+    catch (const std::exception& e)
     {
         phosphor::logging::log<phosphor::logging::level::ERR>(
             "Failed to get the value of GPIO line",