diff --git a/CMakeModules/UseCompat.cmake b/CMakeModules/UseCompat.cmake
index a3be828..f9d98a0 100644
--- a/CMakeModules/UseCompat.cmake
+++ b/CMakeModules/UseCompat.cmake
@@ -58,4 +58,7 @@
     configure_file(${PROJECT_SOURCE_DIR}/compat/compat.h.in ${PROJECT_BINARY_DIR}/compat/compat.h @ONLY)
     include_directories(${PROJECT_BINARY_DIR}/compat)
     set(compatsrc ${PROJECT_SOURCE_DIR}/compat/compat.c)
+    if(WIN32)
+        include_directories(${PROJECT_SOURCE_DIR}/compat/posix-shims)
+    endif()
 endmacro()