diff --git a/.travis.yml b/.travis.yml
index 401db01..f1b472c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -30,7 +30,18 @@ matrix:
     # GCC default, draft disabled, default libzmq (defined in ci_build.sh)
     - os: linux
 
-    # GCC 7, draft enabled (default), latest libzmq (default)
+    # GCC 6, draft disabled (default), latest libzmq (default)
+    - os: linux
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-6
+      env:
+        - MATRIX_EVAL="CC=gcc-6 && CXX=g++-6"
+
+    # GCC 7, draft enabled, latest libzmq (default)
     - os: linux
       addons:
         apt:
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8ac7b34..21670bb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,11 +19,7 @@ if (ZeroMQ_FOUND AND (NOT TARGET libzmq OR NOT TARGET libzmq-static))
   message(FATAL_ERROR "ZeroMQ version not supported!")
 endif()
 
-if (EXISTS "${CMAKE_SOURCE_DIR}/.git")
-    OPTION (ENABLE_DRAFTS "Build and install draft classes and methods" ON)
-else ()
-    OPTION (ENABLE_DRAFTS "Build and install draft classes and methods" OFF)
-endif ()
+OPTION (ENABLE_DRAFTS "Build and install draft classes and methods" OFF)
 if (ENABLE_DRAFTS)
     ADD_DEFINITIONS (-DZMQ_BUILD_DRAFT_API)
     set (pkg_config_defines "-DZMQ_BUILD_DRAFT_API=1")
diff --git a/tests/testutil.hpp b/tests/testutil.hpp
index 845d6db..1ac5078 100644
--- a/tests/testutil.hpp
+++ b/tests/testutil.hpp
@@ -3,7 +3,7 @@
 #include <gtest/gtest.h>
 #include <zmq.hpp>
 
-#if defined(ZMQ_CPP11)
+#if defined(ZMQ_BUILD_DRAFT_API) && defined(ZMQ_CPP11)
 #include <array>
 
 class loopback_ip4_binder