diff --git a/.travis.yml b/.travis.yml
index 87c78a7..8d42327 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -61,7 +61,7 @@ matrix:
             - g++-5
           sources: *sources
 script: >
-    cmake -DCXXOPTS_BUILD_TESTS=ON -DCMAKE_CXX_COMPILER=$COMPILER
+    cmake -Werror=dev -DCXXOPTS_BUILD_TESTS=ON -DCMAKE_CXX_COMPILER=$COMPILER
     -DCMAKE_CXX_FLAGS=$CXXFLAGS $UNICODE_OPTIONS $CMAKE_OPTIONS .
     && make && make ARGS=--output-on-failure test
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5e5043d..7db33e6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,6 +30,9 @@ project(cxxopts
     LANGUAGES CXX
 )
 
+# Must include after the project call due to GNUInstallDirs requiring a language be enabled (IE. CXX)
+include(GNUInstallDirs)
+
 # Determine whether this is a standalone project or included by other projects
 set(CXXOPTS_STANDALONE_PROJECT OFF)
 if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
diff --git a/cmake/cxxopts.cmake b/cmake/cxxopts.cmake
index 9ef6caa..ef975b8 100644
--- a/cmake/cxxopts.cmake
+++ b/cmake/cxxopts.cmake
@@ -22,7 +22,6 @@ if (CMAKE_VERSION VERSION_GREATER 3.10 OR CMAKE_VERSION VERSION_EQUAL 3.10)
     include_guard()
 endif()
 
-include(GNUInstallDirs)
 include(CMakePackageConfigHelpers)
 
 function(cxxopts_getversion version_arg)