diff --git a/.gitignore b/.gitignore
index bb092d9..26992e7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,25 @@
-dist
-.cabal-sandbox
-*.swp
+*.aux
+*.chi
+*.chs.h
+*.dyn_hi
+*.dyn_o
+*.eventlog
+*.hi
+*.hie
+*.hp
+*.o
+*.prof
 *.swo
+*.swp
+.HTF/
+.cabal-sandbox/
+.ghc.environment.*
+.hpc
+.hsenv
+.stack-work/
+cabal-dev
+cabal.project.local
+cabal.project.local~
+cabal.sandbox.config
+dist
+dist-*
diff --git a/src/Graphics/Text/TrueType/FontFolders.hs b/src/Graphics/Text/TrueType/FontFolders.hs
index 243a139..9468a27 100644
--- a/src/Graphics/Text/TrueType/FontFolders.hs
+++ b/src/Graphics/Text/TrueType/FontFolders.hs
@@ -60,6 +60,7 @@ import Graphics.Text.TrueType.Header
 import Graphics.Text.TrueType.Name
 
 import Control.DeepSeq (($!!))
+import Data.List
 
 catchAny :: IO a -> (E.SomeException -> IO a) -> IO a
 catchAny = E.catch
@@ -200,7 +201,7 @@ buildFontCache loader = do
              <*> build rest
       else do
         isFile <- doesFileExist n
-        if isFile then do
+        if isFile && (".ttf" `isSuffixOf` n) then do
             f <- loader n
             case f of
               Nothing -> build rest