diff --git a/.travis.yml b/.travis.yml
index 5702463a..5fadfeec 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,12 +7,14 @@ matrix:
       compiler: clang
       script:
         - python test/run.py
+        - make ws
 
     # Linux
     - os: linux
       dist: xenial
       script: 
         - python test/run.py
+        - make ws
       env:
         - CC=gcc
         - CXX=g++
diff --git a/makefile b/makefile
index b683cbeb..8d5f15c4 100644
--- a/makefile
+++ b/makefile
@@ -11,6 +11,9 @@ install: brew
 brew:
 	mkdir -p build && (cd build ; cmake -DUSE_TLS=1 -DUSE_WS=1 .. ; make -j install)
 
+ws:
+	mkdir -p build && (cd build ; cmake -DUSE_TLS=1 -DUSE_WS=1 .. ; make -j)
+
 uninstall:
 	xargs rm -fv < build/install_manifest.txt