diff --git a/unsupported/test/CMakeLists.txt b/unsupported/test/CMakeLists.txt
index dd9b3a89b..3c6c61b67 100644
--- a/unsupported/test/CMakeLists.txt
+++ b/unsupported/test/CMakeLists.txt
@@ -103,7 +103,9 @@ if(NOT EIGEN_TEST_NO_OPENGL)
   else()
     ei_add_property(EIGEN_MISSING_BACKENDS "OpenGL, ")
   endif()
-endif(NOT EIGEN_TEST_NO_OPENGL)
+else()
+    ei_add_property(EIGEN_MISSING_BACKENDS "OpenGL, ")
+endif()
 
 find_package(GSL)
 if(GSL_FOUND AND GSL_VERSION_MINOR LESS 9)