diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8e021dcc..3bea3710 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -31,6 +31,7 @@ endif()
 # Necessary for Windows
 if(MINGW)
   set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
+  set(NEED_PTHREAD ON)
 endif()
 
 # Standard CMake options