diff --git a/opt-int-array.go b/opt-int-array.go
index 1cdc9df..2d9c993 100644
--- a/opt-int-array.go
+++ b/opt-int-array.go
@@ -73,7 +73,7 @@ func (opt *cliOptionIntArray) parse(parser cliParser, argIndex int, valuePtr *st
 					if val, ok := boxedValue.([]int); ok {
 						*opt.targetVar = val
 					} else {
-						err = errInvalidOptionValue(opt.name, boxedValue, "array of int")
+						err = errInvalidOptionValue(opt.name, boxedValue, "num-array")
 					}
 				} else {
 					for value := range strings.SplitSeq(optValue, ",") {
@@ -83,6 +83,7 @@ func (opt *cliOptionIntArray) parse(parser cliParser, argIndex int, valuePtr *st
 								*opt.targetVar = append(*opt.targetVar, i)
 							}
 						} else {
+							err = errInvalidOptionValue(opt.name, value, "num-array")
 							break
 						}
 					}