diff --git a/CMakeLists.txt b/CMakeLists.txt
index e71c54e..63a159d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,5 +9,9 @@ find_package(Threads REQUIRED)
 find_package(Qt5 COMPONENTS Core Widgets Multimedia REQUIRED)
 find_package(WebRTC REQUIRED)
 
+if (MSVC)
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4267")
+endif()
+
 add_subdirectory(external)
 add_subdirectory(src)
diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index 508edd4..61187fb 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -1 +1,8 @@
+if (NOT MSVC)
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")
+else()
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /wd4018 /wd4244 /wd4267 /wd4305")
+endif()
+
 add_subdirectory(SpeexDSP)