diff --git a/src/Language/Ruby/Assignment.hs b/src/Language/Ruby/Assignment.hs
index c0c619121..05a95d6d0 100644
--- a/src/Language/Ruby/Assignment.hs
+++ b/src/Language/Ruby/Assignment.hs
@@ -230,8 +230,7 @@ scopeResolution = makeTerm <$> symbol ScopeResolution <*> children (Expression.S
 
 parameter :: Assignment
 parameter =
-      mk Identifier
-  <|> mk Identifier'
+      lhsIdent
   <|> mk SplatParameter
   <|> mk HashSplatParameter
   <|> mk BlockParameter
diff --git a/test/fixtures/ruby/lambda.diffA-B.txt b/test/fixtures/ruby/lambda.diffA-B.txt
index 347a6dbfa..67d452c63 100644
--- a/test/fixtures/ruby/lambda.diffA-B.txt
+++ b/test/fixtures/ruby/lambda.diffA-B.txt
@@ -6,8 +6,7 @@
     {+(Identifier)+}
     { ([])
     ->(Plus
-      {+(Send
-        {+(Identifier)+})+}
+      {+(Identifier)+}
       {+(Integer)+}) }))
 {-(Send
   {-(Identifier)-}
diff --git a/test/fixtures/ruby/lambda.diffB-A.txt b/test/fixtures/ruby/lambda.diffB-A.txt
index fd3c37ae8..1f25ddb9c 100644
--- a/test/fixtures/ruby/lambda.diffB-A.txt
+++ b/test/fixtures/ruby/lambda.diffB-A.txt
@@ -5,8 +5,7 @@
       (Empty)
     {-(Identifier)-}
     { (Plus
-      {-(Send
-        {-(Identifier)-})-}
+      {-(Identifier)-}
       {-(Integer)-})
     ->([]) }))
 {+(Send
diff --git a/test/fixtures/ruby/lambda.parseB.txt b/test/fixtures/ruby/lambda.parseB.txt
index 0ae3a43d2..23f3795f0 100644
--- a/test/fixtures/ruby/lambda.parseB.txt
+++ b/test/fixtures/ruby/lambda.parseB.txt
@@ -5,6 +5,5 @@
       (Empty)
       (Identifier)
       (Plus
-        (Send
-          (Identifier))
+        (Identifier)
         (Integer)))))