diff --git a/lib/ast.js b/lib/ast.js
index ff1812e6d..4bd42f58a 100644
--- a/lib/ast.js
+++ b/lib/ast.js
@@ -3968,7 +3968,7 @@ exports.Case = Case = (function(superclass){
         i = i$;
         test = tests[i$];
         tar = Chain(target).add(Index(Literal(i), '.', true));
-        tests[i] = Chain(test).autoCompare(target ? [tar] : null);
+        tests[i] = Parens(Chain(test).autoCompare(target ? [tar] : null));
       }
     }
     if (bool) {
diff --git a/src/ast.ls b/src/ast.ls
index ca16730bf..658272683 100644
--- a/src/ast.ls
+++ b/src/ast.ls
@@ -2521,7 +2521,7 @@ class exports.Case extends Node
         if type is \match
             for test, i in tests
                 tar = Chain target .add Index (Literal i), \., true
-                tests[i] = Chain test .auto-compare (if target then [tar] else null)
+                tests[i] = Parens (Chain test .auto-compare (if target then [tar] else null))
         if bool
             binary = if type is \match then \&& else \||
             [t] = tests
diff --git a/test/switch.ls b/test/switch.ls
index c1f788e1b..cd1b05e68 100644
--- a/test/switch.ls
+++ b/test/switch.ls
@@ -268,3 +268,8 @@ x = -2
 match x
 | -2 => ok 1
 | _  => ok 0
+
+match 1, 3, 3
+| 1, 1, 2 or 3 => ok 0
+| 1, 2 or 3, 3 => ok 1
+| _            => ok 0