diff --git a/htdocs/admin/system/constall.php b/htdocs/admin/system/constall.php
index c7c7542ccaa..eee003b0872 100644
--- a/htdocs/admin/system/constall.php
+++ b/htdocs/admin/system/constall.php
@@ -186,7 +186,7 @@ foreach($configfileparameters as $key)
 			if ($newkey == 'dolibarr_main_db_pass') print preg_replace('/./i','*',${$newkey});
 			else if ($newkey == 'dolibarr_main_url_root' && preg_match('/__auto__/',${$newkey})) print ${$newkey}.' => '.constant('DOL_MAIN_URL_ROOT');
 			else print ${$newkey};
-			if ($newkey == 'dolibarr_main_url_root' && $newkey != DOL_MAIN_URL_ROOT) print ' (currently overwritten by autodetected value: '.DOL_MAIN_URL_ROOT.')';
+			if ($newkey == 'dolibarr_main_url_root' && ${$newkey} != DOL_MAIN_URL_ROOT) print ' (currently overwritten by autodetected value: '.DOL_MAIN_URL_ROOT.')';
 			print "</td>";
 		}
 		print "</tr>\n";
diff --git a/htdocs/admin/system/dolibarr.php b/htdocs/admin/system/dolibarr.php
index 30830cb26d4..8c4711f98c0 100644
--- a/htdocs/admin/system/dolibarr.php
+++ b/htdocs/admin/system/dolibarr.php
@@ -389,7 +389,7 @@ foreach($configfileparameters as $key => $value)
 				}
 			}
 			else print ${$newkey};
-			if ($newkey == 'dolibarr_main_url_root' && $newkey != DOL_MAIN_URL_ROOT) print ' (currently overwritten by autodetected value: '.DOL_MAIN_URL_ROOT.')';
+			if ($newkey == 'dolibarr_main_url_root' && ${$newkey} != DOL_MAIN_URL_ROOT) print ' (currently overwritten by autodetected value: '.DOL_MAIN_URL_ROOT.')';
 			print "</td>";
 		}
 		print "</tr>\n";