diff --git a/tests/21-tags-OK.asn1.-EF b/tests/21-tags-OK.asn1.-EF
index bf468d4..a8fd93c 100644
--- a/tests/21-tags-OK.asn1.-EF
+++ b/tests/21-tags-OK.asn1.-EF
@@ -1,5 +1,5 @@
 
-ModuleTestTags1 {iso(-1) org(3) dod(6) internet(1) private(4)
+ModuleTestTags1 {iso org(3) dod(6) internet(1) private(4)
 	enterprise(1) spelio(9363) software(1) asn1c(5) test(1)
 	21 1 }
 DEFINITIONS EXPLICIT TAGS ::=
@@ -12,7 +12,7 @@
 
 END
 
-ModuleTestTags2 {iso(-1) org(3) dod(6) internet(1) private(4)
+ModuleTestTags2 {iso org(3) dod(6) internet(1) private(4)
 	enterprise(1) spelio(9363) software(1) asn1c(5) test(1)
 	21 2 }
 DEFINITIONS IMPLICIT TAGS ::=