diff --git a/operand-func.go b/operand-func.go
index afac065..1512cd3 100644
--- a/operand-func.go
+++ b/operand-func.go
@@ -25,7 +25,11 @@ func newFuncCallTerm(tk *Token, args []*term) *term {
 func checkFunctionCall(ctx ExprContext, name string, params []any) (err error) {
 	if info, exists := ctx.GetFuncInfo(name); exists {
 		if info.MinArgs() > len(params) {
-			err = fmt.Errorf("too few params -- expected %d, got %d", info.MinArgs(), len(params))
+			if info.MaxArgs() < 0 {
+				err = fmt.Errorf("too few params -- expected %d or more, got %d", info.MinArgs(), len(params))
+			} else {
+				err = fmt.Errorf("too few params -- expected %d, got %d", info.MinArgs(), len(params))
+			}
 		}
 		if info.MaxArgs() >= 0 && info.MaxArgs() < len(params) {
 			err = fmt.Errorf("too much params -- expected %d, got %d", info.MaxArgs(), len(params))