diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1599ad10..ba32cedf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,7 +17,6 @@ option (USE_OPENMP "Use OpenMP for multithreading" ON)
 option (ENABLE_SURROG "support for surrogates" ON)
 set (HAVE_SURROG ${ENABLE_SURROG})
 option (USE_COMPILE_FEATURES "use cmake>=3.1 cxx11 detection" ON)
-option (LINK_PYTHON "link python libraries" ON)
 
 # Offer the user the choice of overriding the installation directories
 set (INSTALL_LIB_DIR     lib${LIB_SUFFIX} CACHE PATH "Installation directory for libraries")
diff --git a/python/CMakeLists.txt b/python/CMakeLists.txt
index 8c391c24..0c6dc2b6 100644
--- a/python/CMakeLists.txt
+++ b/python/CMakeLists.txt
@@ -6,11 +6,16 @@ include_directories (${NUMPY_INCLUDE_DIRS})
 include_directories (${Boost_INCLUDE_DIRS})
 
 python_add_module (lcmaes lcmaes.cc)
+
 target_link_libraries(lcmaes cmaes ${Boost_LIBRARIES})
-if (LINK_PYTHON)
+
+if (WIN32)
   target_link_libraries(lcmaes ${PYTHON_LIBRARIES})
+elseif (APPLE)
+  set_target_properties(lcmaes PROPERTIES LINK_FLAGS "-undefined dynamic_lookup")
 endif ()
 
+
 install (TARGETS lcmaes DESTINATION ${PYTHON_SITE_PACKAGES})
 
 set (PYINSTALLCHECK_ENVIRONMENT "PYTHONPATH=${CMAKE_CURRENT_BINARY_DIR}")
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 331cd2cd..cc2d0110 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -7,7 +7,7 @@ macro (cmaes_add_test name)
   target_link_libraries (t_${name} cmaes)
   add_test (NAME ${name} COMMAND t_${name})
   if (WIN32)
-    set_tests_properties (${name} PROPERTIES ENVIRONMENT "PATH=${PROJECT_BINARY_DIR}\\src\\${CMAKE_BUILD_TYPE};$ENV{PATH}")  # to load dll
+    set_tests_properties (${name} PROPERTIES ENVIRONMENT "PATH=${PROJECT_BINARY_DIR}\\src\\${CMAKE_BUILD_TYPE};${PROJECT_BINARY_DIR}\\src;$ENV{PATH}")  # to load dll
   endif ()
 endmacro ()