diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index a83119c3db..a384ca369a 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -5753,6 +5753,8 @@ fn (mut c Checker) fn_decl(mut node ast.FnDecl) {
 			c.error('method overrides built-in array method', node.pos)
 		} else if sym.kind == .sum_type && node.name == 'type_name' {
 			c.error('method overrides built-in sum type method', node.pos)
+		} else if sym.kind == .multi_return {
+			c.error('cannot define method on multi-value', node.method_type_pos)
 		}
 		if sym.name.len == 1 {
 			// One letter types are reserved for generics.
diff --git a/vlib/v/checker/tests/multi_value_method_err.out b/vlib/v/checker/tests/multi_value_method_err.out
new file mode 100644
index 0000000000..f5be76a119
--- /dev/null
+++ b/vlib/v/checker/tests/multi_value_method_err.out
@@ -0,0 +1,3 @@
+vlib/v/checker/tests/multi_value_method_err.vv:1:7: error: cannot define method on multi-value
+    1 | fn (v (int, int)) f() {}
+      |       ~~~~~~~~~~
diff --git a/vlib/v/checker/tests/multi_value_method_err.vv b/vlib/v/checker/tests/multi_value_method_err.vv
new file mode 100644
index 0000000000..a84f0b654d
--- /dev/null
+++ b/vlib/v/checker/tests/multi_value_method_err.vv
@@ -0,0 +1 @@
+fn (v (int, int)) f() {}