diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index db6e5b8c094..f1fcf94a868 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -9385,12 +9385,12 @@ function dol_eval($s, $returnvalue = 0, $hideerrors = 1, $onlysimplestring = '1'
 				}
 			}
 			$scheck = preg_replace('/->[a-zA-Z0-9_]+\(/', '->__METHOD__', $s);	// accept parenthesis in '...->method(...'
-			$scheck = preg_replace('/^\(/', '__PARENTHESIS__', $scheck);	// accept parenthesis in '(...'
-			$scheck = preg_replace('/\s\(/', '__PARENTHESIS__', $scheck);	// accept parenthesis in '... ('
+			$scheck = preg_replace('/^\(/', '__PARENTHESIS__ ', $scheck);	// accept parenthesis in '(...'. Must replace with __PARENTHESIS__ with a space after to allow following substitutions
+			$scheck = preg_replace('/\s\(/', '__PARENTHESIS__ ', $scheck);	// accept parenthesis in '... ('. Must replace with __PARENTHESIS__ with a space after to allow following substitutions
 			$scheck = preg_replace('/^!?[a-zA-Z0-9_]+\(/', '$1__FUNCTION__', $scheck); // accept parenthesis in 'function(' and '!function('
 			$scheck = preg_replace('/\s!?[a-zA-Z0-9_]+\(/', '$1__FUNCTION__', $scheck); // accept parenthesis in '... function(' and '... !function('
 			$scheck = preg_replace('/(\^|\')\(/', '__REGEXSTART__', $scheck);	// To allow preg_match('/^(aaa|bbb)/'...  or  isStringVarMatching('leftmenu', '(aaa|bbb)')
-			//print 'scheck='.$scheck." : ".strpos($scheck, '(')."\n";
+			//print 'scheck='.$scheck." : ".strpos($scheck, '(')."<br>\n";
 			if (strpos($scheck, '(') !== false) {
 				if ($returnvalue) {
 					return 'Bad string syntax to evaluate (found call of a function or method without using direct name): '.$s;
@@ -9412,12 +9412,12 @@ function dol_eval($s, $returnvalue = 0, $hideerrors = 1, $onlysimplestring = '1'
 				}
 			}
 			$scheck = preg_replace('/->[a-zA-Z0-9_]+\(/', '->__METHOD__', $s);	// accept parenthesis in '...->method(...'
-			$scheck = preg_replace('/^\(/', '__PARENTHESIS__', $scheck);	// accept parenthesis in '(...'
-			$scheck = preg_replace('/\s\(/', '__PARENTHESIS__', $scheck);	// accept parenthesis in '... ('
+			$scheck = preg_replace('/^\(/', '__PARENTHESIS__ ', $scheck);	// accept parenthesis in '(...'. Must replace with __PARENTHESIS__ with a space after to allow following substitutions
+			$scheck = preg_replace('/\s\(/', '__PARENTHESIS__ ', $scheck);	// accept parenthesis in '... ('. Must replace with __PARENTHESIS__ with a space after to allow following substitutions
 			$scheck = preg_replace('/^!?[a-zA-Z0-9_]+\(/', '$1__FUNCTION__', $scheck); // accept parenthesis in 'function(' and '!function('
 			$scheck = preg_replace('/\s!?[a-zA-Z0-9_]+\(/', '$1__FUNCTION__', $scheck); // accept parenthesis in '... function(' and '... !function('
 			$scheck = preg_replace('/(\^|\')\(/', '__REGEXSTART__', $scheck);		// To allow preg_match('/^(aaa|bbb)/'...  or  isStringVarMatching('leftmenu', '(aaa|bbb)')
-			//print 'scheck='.$scheck." : ".strpos($scheck, '(')."\n";
+			//print 'scheck='.$scheck." : ".strpos($scheck, '(')."<br>\n";
 			if (strpos($scheck, '(') !== false) {
 				if ($returnvalue) {
 					return 'Bad string syntax to evaluate (found call of a function or method without using direct name): '.$s;