diff --git a/t_parser_test.go b/t_parser_test.go
index e8dd3b7..2a92d4f 100644
--- a/t_parser_test.go
+++ b/t_parser_test.go
@@ -115,7 +115,7 @@ func TestGeneralParser(t *testing.T) {
 		/*  94 */ {`false or true`, true, nil},
 		/*  95 */ {`false or (x==2)`, nil, errors.New(`undefined variable or function "x"`)},
 		/*  96 */ {`a=5; a`, int64(5), nil},
-		/*  97 */ {`2=5`, nil, errors.New(`assign operator ("=") must be preceded by a variable`)},
+		/*  97 */ {`2=5`, nil, errors.New(`[1:2] left operand of "=" must be a variable`)},
 		/*  98 */ {`2+a=5`, nil, errors.New(`[1:3] left operand of "=" must be a variable`)},
 		/*  99 */ {`2+(a=5)`, int64(7), nil},
 		/* 100 */ {`x ?? "default"`, "default", nil},