diff --git a/ext/pdo_firebird/firebird_statement.c b/ext/pdo_firebird/firebird_statement.c
index 4ad51ab483d96..7b19f41731b9b 100644
--- a/ext/pdo_firebird/firebird_statement.c
+++ b/ext/pdo_firebird/firebird_statement.c
@@ -571,10 +571,14 @@ static int firebird_stmt_param_hook(pdo_stmt_t *stmt, struct pdo_bound_param_dat
 			for (i = 0; i < sqlda->sqld; ++i) {
 				XSQLVAR *var = &sqlda->sqlvar[i];
 
-				if ((var->aliasname_length && !strncasecmp(ZSTR_VAL(param->name), var->aliasname,
-						min(ZSTR_LEN(param->name), var->aliasname_length)))
-						|| (var->sqlname_length && !strncasecmp(ZSTR_VAL(param->name), var->sqlname,
-						min(ZSTR_LEN(param->name), var->sqlname_length)))) {
+				if ( (
+						var->aliasname_length
+						&& zend_string_starts_with_cstr_ci(param->name, var->aliasname, var->aliasname_length)
+					) || (
+						var->sqlname_length
+						&& zend_string_starts_with_cstr_ci(param->name, var->sqlname, var->sqlname_length)
+					)
+				) {
 					param->paramno = i;
 					break;
 				}