diff --git a/tests/tests-asn1c-compiler/18-class-OK.asn1 b/tests/tests-asn1c-compiler/18-class-OK.asn1
index edae8566d..24a01a1b9 100644
--- a/tests/tests-asn1c-compiler/18-class-OK.asn1
+++ b/tests/tests-asn1c-compiler/18-class-OK.asn1
@@ -25,7 +25,7 @@ BEGIN
 
 	operator-plus FUNCTION ::= {
 		&ArgType		Pair,
-		&SupportedArguments	{ PosPair | NegPair }
+		&SupportedArguments	{ PosPair | NegPair },
 		&ResultType		INTEGER,
 		&result-if-error	0,
 		&code			1
diff --git a/tests/tests-asn1c-compiler/18-class-OK.asn1.+-E_-F b/tests/tests-asn1c-compiler/18-class-OK.asn1.+-E_-F
index e5ce9c2c0..520e218be 100644
--- a/tests/tests-asn1c-compiler/18-class-OK.asn1.+-E_-F
+++ b/tests/tests-asn1c-compiler/18-class-OK.asn1.+-E_-F
@@ -17,7 +17,7 @@ FUNCTION ::= CLASS {
 
 operator-plus FUNCTION ::= {
 		&ArgType		Pair,
-		&SupportedArguments	{ PosPair | NegPair }
+		&SupportedArguments	{ PosPair | NegPair },
 		&ResultType		INTEGER,
 		&result-if-error	0,
 		&code			1