diff --git a/vlib/v/parser/expr.v b/vlib/v/parser/expr.v
index 9e61b664d6..109d05feab 100644
--- a/vlib/v/parser/expr.v
+++ b/vlib/v/parser/expr.v
@@ -223,6 +223,9 @@ fn (mut p Parser) check_expr(precedence int) !ast.Expr {
 				}
 			} else {
 				p.check(.lpar)
+				if p.tok.kind == .name && p.tok.lit.len > 0 && p.tok.lit[0].is_capital() {
+					p.error_with_pos('use `typeof[T]()`, instead of `typeof(T)`', spos)
+				}
 				expr := p.expr(0)
 				p.check(.rpar)
 				if p.tok.kind != .dot && p.tok.line_nr == p.prev_tok.line_nr {
diff --git a/vlib/v/parser/tests/typeof_typename_err.out b/vlib/v/parser/tests/typeof_typename_err.out
new file mode 100644
index 0000000000..1bc8b7e534
--- /dev/null
+++ b/vlib/v/parser/tests/typeof_typename_err.out
@@ -0,0 +1,5 @@
+vlib/v/parser/tests/typeof_typename_err.vv:1:29: error: use `typeof[T]()`, instead of `typeof(T)`
+    1 | fn f[T]() { println("type ${typeof(T)}") }
+      |                             ~~~~~~
+    2 | f[int]()
+    3 | f[string]()
diff --git a/vlib/v/parser/tests/typeof_typename_err.vv b/vlib/v/parser/tests/typeof_typename_err.vv
new file mode 100644
index 0000000000..dcf15f45ef
--- /dev/null
+++ b/vlib/v/parser/tests/typeof_typename_err.vv
@@ -0,0 +1,5 @@
+fn f[T]() { println("type ${typeof(T)}") }
+f[int]()
+f[string]()
+
+