diff --git a/config/meson.build b/config/meson.build
index 8a72a63..7f2318f 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -27,6 +27,7 @@
    # Override logging level as 'debug' if 'bmcweb-logging' is set as 'dsiabled'
    loglvlopt = 'debug'
 endif
+loglvlopt = loglvlopt.to_upper()
 conf_data.set('BMCWEB_LOGGING_LEVEL', loglvlopt)
 
 conf_h_dep = declare_dependency(