diff --git a/crates/parser/src/grammar.pest b/crates/parser/src/grammar.pest
index 9a46e40..9451996 100644
--- a/crates/parser/src/grammar.pest
+++ b/crates/parser/src/grammar.pest
@@ -97,7 +97,7 @@ generics = { "<" ~ (generic ~ ("," ~ generic)*)? ~ ">" }
 // ======================================================
 
 tuple_type = {
-    "[" ~ (type_expr ~ ("," ~ type_expr)*)? ~ ","? ~ "]"
+    "(" ~ (type_expr ~ ("," ~ type_expr)*)? ~ ","? ~ ")"
 }
 
 path_type = {
@@ -142,11 +142,11 @@ multi_pat_template = _{
 }
 
 tuple_pattern = {
-    "[" ~ (pattern | etc_pattern) ~ "," ~ multi_pat_template ~ "]"
+    "(" ~ (pattern | etc_pattern) ~ "," ~ multi_pat_template ~ ")"
 }
 
 named_tuple_pattern = {
-    static_path ~ "[" ~ multi_pat_template ~ "]"
+    static_path ~ "(" ~ multi_pat_template ~ ")"
 }
 
 struct_destruct = {
diff --git a/mist-test/src/main.mist b/mist-test/src/main.mist
index c6bc7b1..259dd4a 100644
--- a/mist-test/src/main.mist
+++ b/mist-test/src/main.mist
@@ -1,5 +1,3 @@
-fn Result<[], String> main() {
+fn void main() {
     println!("running common tests...");
-
-    Ok(())
 }