diff --git a/lib/Bril.hs b/lib/Bril.hs
index ad89ae8..99ffcbc 100644
--- a/lib/Bril.hs
+++ b/lib/Bril.hs
@@ -120,24 +120,24 @@ instrFromString s
 
 instance Show InstrOperation where
     show op = case op of
-        Nop   -> "add"
-        Add   -> "sub"
-        Sub   -> "mul"
-        Mul   -> "eq"
-        Eq    -> "lt"
-        Lt    -> "gt"
-        Gt    -> "le"
-        Le    -> "ge"
-        Ge    -> "not"
-        Not   -> "and"
-        And   -> "or"
-        Or    -> "jmp"
-        Jmp   -> "br"
-        Br    -> "ret"
-        Ret   -> "call"
-        Call  -> "print"
-        Print -> "id"
-        Id    -> "nop"
+        Add   -> "add"
+        Sub   -> "sub"
+        Mul   -> "mul"
+        Eq    -> "eq"
+        Lt    -> "lt"
+        Gt    -> "gt"
+        Le    -> "le"
+        Ge    -> "ge"
+        Not   -> "not"
+        And   -> "and"
+        Or    -> "or"
+        Jmp   -> "jmp"
+        Br    -> "br"
+        Ret   -> "ret"
+        Call  -> "call"
+        Print -> "print"
+        Id    -> "id"
+        Nop   -> "nop"
 
 
 optionalArrayField :: FromJSON a => Data.Aeson.Object -> Data.Aeson.Key -> Parser [a]
diff --git a/tests/Main.hs b/tests/Main.hs
index 671c9f9..a96407a 100644
--- a/tests/Main.hs
+++ b/tests/Main.hs
@@ -81,6 +81,10 @@ testInstrs = TestCase $ do
         (eitherDecode "{\"op\": \"id\", \"dest\": \"a\", \"type\": \"bool\", \"args\": [\"b\"]}")
         (Right $ B.ValueInstr B.Id B.Bool "a" ["b"] [] [])
 
+    assertEqual "parse label"
+        (eitherDecode "{\"label\": \"test\"}")
+        (Right $ B.Label "test")
+
 testProgramFromFiles :: Test
 testProgramFromFiles = TestCase $ do
     res <- try $ (B.parseBrilFromPath "bril-sources/add.json") :: IO (Either IOError (Either String B.Program))