diff --git a/conformance_test/core_language_tests/negative_tests/16-20_folders.script b/conformance_test/core_language_tests/negative_tests/16-20_folders.script
index 768f47bc398da10780920ddfdd993f9c0b2e5436..221404665442bfdbaa453aa9734bf6dca2f59110 100644
--- a/conformance_test/core_language_tests/negative_tests/16-20_folders.script
+++ b/conformance_test/core_language_tests/negative_tests/16-20_folders.script
@@ -2434,7 +2434,7 @@ module NegSyn_1901_assignments_001 {
 <END_MODULE>
 
 <RESULT COUNT 1>
-error: at or before token `:=': syntax error, unexpected :=, expecting ','
+error: at or before token `:=': syntax error, unexpected :=, expecting ')' or ','
 <END_RESULT>
 
 <END_TC>