diff --git a/filetypes.xml b/filetypes.xml
index d69f3ad..4bd653a 100644
--- a/filetypes.xml
+++ b/filetypes.xml
@@ -2,6 +2,7 @@
   <component name="FileTypeManager" version="18">
     <ignoreFiles list="*.orig;*.pyc;*.pyo;*.rbc;*.yarb;*~;.DS_Store;.git;.hg;.svn;CVS;__pycache__;_svn;vssver.scc;vssver2.scc" />
     <extensionMap>
+      <mapping pattern="Makefile" type="AUTO_DETECTED" />
       <mapping pattern="_nanorc" type="AUTO_DETECTED" />
       <mapping pattern="npm-shrinkwrap" type="AUTO_DETECTED" />
       <mapping ext="jst" type="EJS" />