diff --git a/src/parser/grammar.pest b/src/parser/grammar.pest
index 4723880..a91c38d 100644
--- a/src/parser/grammar.pest
+++ b/src/parser/grammar.pest
@@ -37,15 +37,15 @@ block = { "{" ~ statement_list ~ "}" }
 statement_list = { statement* }
 
 statement = _{
-      expr_stmt
-    | var_decl
-    | if_stmt
-    | while_stmt
-    | for_stmt
-    | return_stmt
-    | break_stmt
-    | continue_stmt
-    | block
+    expr_stmt
+  | var_decl
+  | if_stmt
+  | while_stmt
+  | for_stmt
+  | return_stmt
+  | break_stmt
+  | continue_stmt
+  | block
 }
 
 // --- basic statements ---
@@ -75,10 +75,7 @@ while_stmt = {
 }
 
 for_stmt = {
-    "for" ~ "(" ~ (var_decl_no_semicolon | expr_stmt | ";")
-           ~ expr? ~ ";"
-           ~ expr? ~ ")"
-           ~ statement
+    "for" ~ "(" ~ (var_decl_no_semicolon | expr_stmt | ";") ~ expr? ~ ";" ~ expr? ~ ")" ~ statement
 }
 
 // helper (same as var_decl but no trailing ;)
@@ -100,6 +97,9 @@ primary = {
 postfix = {
     ("." ~ identifier)
   | ("(" ~ (expr ~ ("," ~ expr)*)? ~ ")")
+  | ("[" ~ expr ~ "]")
+  | ("++" | "--")
+  | (("+" | "-" | "*" | "/" | "%") ~ primary)
 }
 
 expr = {
diff --git a/test/src/main.ms b/test/src/main.ms
index 77c55b6..2e358b8 100644
--- a/test/src/main.ms
+++ b/test/src/main.ms
@@ -1,12 +1,3 @@
-import "fmt";
-
-struct Point {
-    x: int,
-    y: int
-}
-
 function add(a: int, b: int): int {
-    if (x) {
-        if (y) return 1;
-    }
+    itm.a + itm.b();
 }