diff --git a/c_src/build_deps.sh b/c_src/build_deps.sh
index 324350e..4294d63 100755
--- a/c_src/build_deps.sh
+++ b/c_src/build_deps.sh
@@ -11,9 +11,10 @@ unset POSIX_SHELL # clear it so if we invoke other scripts, they run as ksh as w
 set -e
 
 WT_REPO=http://github.com/wiredtiger/wiredtiger.git
-WT_BRANCH=
-WT_REF="tags/1.6.3"
-WT_DIR=wiredtiger-`basename $WT_REF`
+WT_BRANCH=develop
+WT_DIR=wiredtiger-`basename $WT_BRANCH`
+#WT_REF="tags/1.6.3"
+#WT_DIR=wiredtiger-`basename $WT_REF`
 
 SNAPPY_VSN="1.0.4"
 SNAPPY_DIR=snappy-$SNAPPY_VSN
diff --git a/c_src/wterl.c b/c_src/wterl.c
index 4436004..8263f40 100644
--- a/c_src/wterl.c
+++ b/c_src/wterl.c
@@ -31,7 +31,6 @@
 #include "common.h"
 #include "async_nif.h"
 #include "queue.h"
-#include "cas.h"
 
 #define MAX_CACHE_SIZE ASYNC_NIF_MAX_WORKERS