diff --git a/Language/C/Parser/Parser.y b/Language/C/Parser/Parser.y
--- a/Language/C/Parser/Parser.y
+++ b/Language/C/Parser/Parser.y
@@ -3995,8 +3995,9 @@
   throw $ ParserException loc $ text errMsg
 
 mkBlock :: [BlockItem] -> SrcLoc -> Stm
-mkBlock [BlockStm stm] _    = stm
-mkBlock items          sloc = Block items sloc
+mkBlock items@[BlockStm AntiStms{}] sloc = Block items sloc
+mkBlock [BlockStm stm]              _    = stm
+mkBlock items                       sloc = Block items sloc
 
 mkBlockItems :: Stm -> [BlockItem]
 mkBlockItems (Block items _) = items
diff --git a/dist/build/Language/C/Parser/Lexer.hs b/dist/build/Language/C/Parser/Lexer.hs
--- a/dist/build/Language/C/Parser/Lexer.hs
+++ b/dist/build/Language/C/Parser/Lexer.hs
@@ -625,8 +625,7 @@
 
 
 {-# LINE 9 "<command-line>" #-}
-{-# LINE 1 "/opt/modules/ghc/8.0.0.20160421/lib/ghc-8.0.0.20160421/include/ghcversion.h" #-}
-
+{-# LINE 1 "/opt/modules/ghc/8.0.1/lib/ghc-8.0.1/include/ghcversion.h" #-}
 
 
 
@@ -645,7 +644,25 @@
 
 
 {-# LINE 9 "<command-line>" #-}
-{-# LINE 1 "/tmp/ghc23018_0/ghc_2.h" #-}
+{-# LINE 1 "/tmp/ghc19004_0/ghc_2.h" #-}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
 
 
 
diff --git a/dist/build/Language/C/Parser/Parser.hs b/dist/build/Language/C/Parser/Parser.hs
--- a/dist/build/Language/C/Parser/Parser.hs
+++ b/dist/build/Language/C/Parser/Parser.hs
@@ -11682,8 +11682,9 @@
   throw $ ParserException loc $ text errMsg
 
 mkBlock :: [BlockItem] -> SrcLoc -> Stm
-mkBlock [BlockStm stm] _    = stm
-mkBlock items          sloc = Block items sloc
+mkBlock items@[BlockStm AntiStms{}] sloc = Block items sloc
+mkBlock [BlockStm stm]              _    = stm
+mkBlock items                       sloc = Block items sloc
 
 mkBlockItems :: Stm -> [BlockItem]
 mkBlockItems (Block items _) = items
@@ -11782,8 +11783,7 @@
 
 
 {-# LINE 11 "<command-line>" #-}
-{-# LINE 1 "/opt/modules/ghc/8.0.0.20160421/lib/ghc-8.0.0.20160421/include/ghcversion.h" #-}
-
+{-# LINE 1 "/opt/modules/ghc/8.0.1/lib/ghc-8.0.1/include/ghcversion.h" #-}
 
 
 
@@ -11802,7 +11802,7 @@
 
 
 {-# LINE 11 "<command-line>" #-}
-{-# LINE 1 "/tmp/ghc22745_0/ghc_2.h" #-}
+{-# LINE 1 "/tmp/ghc18285_0/ghc_2.h" #-}
 
 
 
diff --git a/language-c-quote.cabal b/language-c-quote.cabal
--- a/language-c-quote.cabal
+++ b/language-c-quote.cabal
@@ -1,5 +1,5 @@
 name:          language-c-quote
-version:       0.11.6.1
+version:       0.11.6.2
 cabal-version: >= 1.10
 license:       BSD3
 license-file:  LICENSE
diff --git a/tests/unit/Main.hs b/tests/unit/Main.hs
--- a/tests/unit/Main.hs
+++ b/tests/unit/Main.hs
@@ -7,6 +7,7 @@
 import Test.HUnit (Assertion, (@?=))
 
 import qualified Data.ByteString.Char8 as B
+import Data.Char (isSpace)
 import Data.Loc (SrcLoc, noLoc, startPos)
 import Control.Exception (SomeException)
 import Language.C.Quote.C
@@ -430,7 +431,8 @@
 
 regressionTests :: Test
 regressionTests = testGroup "Regressions"
-    [ issue64
+    [ issue68
+    , issue64
     , testCase "pragmas" test_pragmas
     , issue48
     , testCase "Issue #44" issue44
@@ -458,6 +460,15 @@
                       noLoc
             ]
 
+    issue68 :: Test
+    issue68 = testCase "Issue #68"$
+        simpleRender (ppr [cstm|if (!initialized) { $stms:init_stms }|])
+        @?=
+        "if (!initialized) { return; }"
+      where
+        init_stms :: [C.Stm]
+        init_stms = [[cstm|return;|]]
+
     issue64 :: Test
     issue64 = testGroup "Issue #64"
               [ testCase "-($int:i)"  test_issue64_1
@@ -541,3 +552,12 @@
                          C.Type (C.DeclSpec [] [] (C.Tlong_double_Imaginary noLoc) noLoc)
                                 (C.DeclRoot noLoc)
                                 noLoc
+
+-- | Render a document as a single line.
+simpleRender :: Doc -> String
+simpleRender doc =
+    map space2space (displayS (renderCompact doc) "")
+  where
+    space2space :: Char -> Char
+    space2space c | isSpace c = ' '
+                  | otherwise = c