diff --git a/ShellCheck.cabal b/ShellCheck.cabal
index 099052e..d54f0b8 100644
--- a/ShellCheck.cabal
+++ b/ShellCheck.cabal
@@ -80,6 +80,7 @@ library
       ShellCheck.Formatter.CheckStyle
       ShellCheck.Formatter.GCC
       ShellCheck.Formatter.JSON
+      ShellCheck.Formatter.JSON1
       ShellCheck.Formatter.TTY
       ShellCheck.Formatter.Quiet
       ShellCheck.Interface
diff --git a/shellcheck.hs b/shellcheck.hs
index 02ed88a..351e1c2 100644
--- a/shellcheck.hs
+++ b/shellcheck.hs
@@ -27,6 +27,7 @@ import qualified ShellCheck.Formatter.CheckStyle
 import           ShellCheck.Formatter.Format
 import qualified ShellCheck.Formatter.GCC
 import qualified ShellCheck.Formatter.JSON
+import qualified ShellCheck.Formatter.JSON1
 import qualified ShellCheck.Formatter.TTY
 import qualified ShellCheck.Formatter.Quiet
 
@@ -141,8 +142,8 @@ formats :: FormatterOptions -> Map.Map String (IO Formatter)
 formats options = Map.fromList [
     ("checkstyle", ShellCheck.Formatter.CheckStyle.format),
     ("gcc",  ShellCheck.Formatter.GCC.format),
-    ("json", ShellCheck.Formatter.JSON.format False),  -- JSON with 8-char tabs
-    ("json1", ShellCheck.Formatter.JSON.format True), -- JSON with 1-char tabs
+    ("json", ShellCheck.Formatter.JSON.format),
+    ("json1", ShellCheck.Formatter.JSON1.format),
     ("tty",  ShellCheck.Formatter.TTY.format options),
     ("quiet",  ShellCheck.Formatter.Quiet.format options)
     ]
diff --git a/src/ShellCheck/Formatter/JSON.hs b/src/ShellCheck/Formatter/JSON.hs
index c3f3219..7c26421 100644
--- a/src/ShellCheck/Formatter/JSON.hs
+++ b/src/ShellCheck/Formatter/JSON.hs
@@ -30,12 +30,12 @@ import GHC.Exts
 import System.IO
 import qualified Data.ByteString.Lazy.Char8 as BL
 
-format :: Bool -> IO Formatter
-format removeTabs = do
+format :: IO Formatter
+format = do
     ref <- newIORef []
     return Formatter {
         header = return (),
-        onResult = collectResult removeTabs ref,
+        onResult = collectResult ref,
         onFailure = outputError,
         footer = finish ref
     }
@@ -98,19 +98,12 @@ instance ToJSON Fix where
 
 outputError file msg = hPutStrLn stderr $ file ++ ": " ++ msg
 
-collectResult removeTabs ref cr sys = mapM_ f groups
+collectResult ref cr sys = mapM_ f groups
   where
     comments = crComments cr
     groups = groupWith sourceFile comments
     f :: [PositionedComment] -> IO ()
-    f group = do
-        let filename = sourceFile (head group)
-        result <- siReadFile sys filename
-        let contents = either (const "") id result
-        let comments' = if removeTabs
-                        then makeNonVirtual comments contents
-                        else comments
-        modifyIORef ref (\x -> comments' ++ x)
+    f group = modifyIORef ref (\x -> comments ++ x)
 
 finish ref = do
     list <- readIORef ref