diff --git a/x11/library/mesa/actions.py b/x11/library/mesa/actions.py
index 01540e3701..d4cb8fcc33 100644
--- a/x11/library/mesa/actions.py
+++ b/x11/library/mesa/actions.py
@@ -39,6 +39,7 @@ def setup():
               --enable-llvm-shared-libs \
               --enable-shared-glapi \
               --enable-texture-float \
+              --enable-sysfs \
              "
 
     if get.buildTYPE() == "emul32":
diff --git a/x11/library/mesa/pspec.xml b/x11/library/mesa/pspec.xml
index c1eed0f69d..6d93f2b1fd 100644
--- a/x11/library/mesa/pspec.xml
+++ b/x11/library/mesa/pspec.xml
@@ -181,7 +181,7 @@
     
     <History>
         <Update release="5">
-            <Date>2017-02-15</Date>
+            <Date>2017-03-23</Date>
             <Version>13.0.4</Version>
             <Comment>llvm rebuild</Comment>
             <Name>Alihan Öztürk</Name>