diff --git a/accounts/abi/selector_parser.go b/accounts/abi/selector_parser.go
index b8ddd7d656..626597462b 100644
--- a/accounts/abi/selector_parser.go
+++ b/accounts/abi/selector_parser.go
@@ -75,8 +75,11 @@ func parseElementaryType(unescapedSelector string) (string, string, error) {
 			parsedType = parsedType + string(rest[0])
 			rest = rest[1:]
 		}
-		if len(rest) == 0 || rest[0] != ']' {
-			return "", "", fmt.Errorf("failed to parse array: expected ']', got %c", unescapedSelector[0])
+		if len(rest) == 0 {
+			return "", "", fmt.Errorf("failed to parse array: expected ']', got end of string")
+		}
+		if rest[0] != ']' {
+			return "", "", fmt.Errorf("failed to parse array: expected ']', got %c", rest[0])
 		}
 		parsedType = parsedType + string(rest[0])
 		rest = rest[1:]