diff --git a/.travis.yml b/.travis.yml
index 36834e6..455884b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,7 @@ language: cpp
 
 os:
     - linux
+    - osx
 
 compiler:
     - gcc
@@ -29,4 +30,4 @@ script:
 notifications:
   email:
     on_success: never
-    on_failure: always
+    on_failure: never
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 46e1822..27c0aee 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -60,9 +60,6 @@ else()
 	set(VERSION_GIT_FULL "${VERSION_GIT}-${VERSION_GIT_IS_DIRTY}")
 endif()
 
-include(CheckSymbolExists)
-check_symbol_exists(posix_fadvise fcntl.h HAVE_POSIX_FADVISE)
-
 add_subdirectory(src)
 
 # tests
diff --git a/src/pfaedle/osm/OsmIdSet.cpp b/src/pfaedle/osm/OsmIdSet.cpp
index 6566692..5390def 100644
--- a/src/pfaedle/osm/OsmIdSet.cpp
+++ b/src/pfaedle/osm/OsmIdSet.cpp
@@ -283,7 +283,9 @@ int OsmIdSet::openTmpFile() const {
     exit(1);
   }
 
+#ifdef __unix__
   posix_fadvise(file, 0, 0, POSIX_FADV_SEQUENTIAL);
+#endif
   return file;
 }
 
diff --git a/src/xml b/src/xml
index bdbfb7a..00e19bf 160000
--- a/src/xml
+++ b/src/xml
@@ -1 +1 @@
-Subproject commit bdbfb7a18c4b6adb1b0be2ab7fc88a3d372efe74
+Subproject commit 00e19bfbdc300eb064fbceef2efaed2ccedfda88