diff --git a/CMakeLists.txt b/CMakeLists.txt
index 33721bc1..b4ccfbf8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -63,7 +63,7 @@ target_link_libraries(${PROJECT_NAME} VoxelEngineSrc ${CMAKE_DL_LIBS})
 add_custom_command(
   TARGET ${PROJECT_NAME} 
   POST_BUILD 
-  COMMAND ${CMAKE_COMMAND} -E copy_directory_if_different 
+  COMMAND ${CMAKE_COMMAND} -E copy_if_different 
           ${CMAKE_CURRENT_SOURCE_DIR}/res 
           $<TARGET_FILE_DIR:${PROJECT_NAME}>/res
   )
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 6e9ee5bc..6350f4b8 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -13,6 +13,7 @@ find_package(GLEW REQUIRED)
 if (CMAKE_SYSTEM_NAME STREQUAL "Windows")
     # specific for vcpkg
     find_package(OpenAL CONFIG REQUIRED)
+    set(OPENAL_LIBRARY OpenAL::OpenAL)
 else()
     find_package(OpenAL REQUIRED)
 endif()
@@ -69,4 +70,4 @@ endif()
 include_directories(${LUA_INCLUDE_DIR})
 include_directories(${CURL_INCLUDE_DIR})
 target_include_directories(${PROJECT_NAME} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
-target_link_libraries(${PROJECT_NAME} ${LIBS} glfw OpenGL::GL OpenAL::OpenAL GLEW::GLEW ZLIB::ZLIB PNG::PNG CURL::libcurl ${VORBISLIB} ${LUA_LIBRARIES} ${CMAKE_DL_LIBS})
+target_link_libraries(${PROJECT_NAME} ${LIBS} glfw OpenGL::GL ${OPENAL_LIBRARY} GLEW::GLEW ZLIB::ZLIB PNG::PNG CURL::libcurl ${VORBISLIB} ${LUA_LIBRARIES} ${CMAKE_DL_LIBS})
diff --git a/src/lighting/LightSolver.cpp b/src/lighting/LightSolver.cpp
index 268c7432..be608f1d 100644
--- a/src/lighting/LightSolver.cpp
+++ b/src/lighting/LightSolver.cpp
@@ -31,7 +31,6 @@ void LightSolver::add(int x, int y, int z, int emission) {
 }
 
 void LightSolver::add(int x, int y, int z) {
-    assert (chunks != nullptr);
     add(x,y,z, chunks.getLight(x,y,z, channel));
 }
 
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 0597d6e4..24fb6671 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -21,7 +21,7 @@ target_link_libraries(
 add_custom_command(
   TARGET ${PROJECT_NAME} 
   POST_BUILD 
-  COMMAND ${CMAKE_COMMAND} -E copy_directory_if_different 
+  COMMAND ${CMAKE_COMMAND} -E copy_if_different 
           ${CMAKE_SOURCE_DIR}/res 
           ${CMAKE_CURRENT_BINARY_DIR}/res
   )