tagging mode is implicit if automatic tags environment is used
diff --git a/tests/86-atags-OK.asn1 b/tests/86-atags-OK.asn1
new file mode 100644
index 0000000..afd0585
--- /dev/null
+++ b/tests/86-atags-OK.asn1
@@ -0,0 +1,20 @@
+
+-- OK: Everything is fine
+
+-- iso.org.dod.internet.private.enterprise (1.3.6.1.4.1)
+-- .spelio.software.asn1c.test (9363.1.5.1)
+-- .86
+
+ModuleAutoTags
+ { iso org(3) dod(6) internet (1) private(4) enterprise(1)
+ spelio(9363) software(1) asn1c(5) test(1) 86 }
+ DEFINITIONS AUTOMATIC TAGS ::=
+BEGIN
+
+ A ::= SEQUENCE { a INTEGER }
+ B ::= SEQUENCE { a [0] INTEGER }
+ C ::= SEQUENCE { a [0] IMPLICIT INTEGER }
+ D ::= SEQUENCE { a [0] EXPLICIT INTEGER }
+ E ::= SEQUENCE { a [0] CHOICE { b INTEGER } }
+
+END