diff --git a/src/Text/Pandoc/Readers/LaTeX.hs b/src/Text/Pandoc/Readers/LaTeX.hs
index ea7d20633..adb66d54a 100644
--- a/src/Text/Pandoc/Readers/LaTeX.hs
+++ b/src/Text/Pandoc/Readers/LaTeX.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP                   #-}
 {-# LANGUAGE NoImplicitPrelude     #-}
 {-# LANGUAGE FlexibleInstances     #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
@@ -38,7 +39,6 @@ import Data.Maybe (fromMaybe, maybeToList)
 import qualified Data.Set as Set
 import Data.Text (Text)
 import qualified Data.Text as T
-import Safe (minimumDef)
 import System.FilePath (addExtension, replaceExtension, takeExtension)
 import Text.Pandoc.BCP47 (Lang (..), renderLang)
 import Text.Pandoc.Builder
@@ -62,6 +62,7 @@ import qualified Text.Pandoc.Translations as Translations
 import Text.Pandoc.Walk
 import qualified Text.Pandoc.Builder as B
 import qualified Data.Text.Normalize as Normalize
+import Safe
 
 -- for debugging:
 -- import Text.Pandoc.Extensions (getDefaultExtensions)
@@ -89,7 +90,11 @@ parseLaTeX = do
   let doc' = doc bs
   let headerLevel (Header n _ _) = [n]
       headerLevel _              = []
+#if MIN_VERSION_safe(0,3,18)
+  let bottomLevel = minimumBound 1 $ query headerLevel doc'
+#else
   let bottomLevel = minimumDef 1 $ query headerLevel doc'
+#endif
   let adjustHeaders m (Header n attr ils) = Header (n+m) attr ils
       adjustHeaders _ x                   = x
   let (Pandoc _ bs') =