diff --git a/cmake/QtPriHelpers.cmake b/cmake/QtPriHelpers.cmake
index a7da0c25382..75e21c5ce21 100644
--- a/cmake/QtPriHelpers.cmake
+++ b/cmake/QtPriHelpers.cmake
@@ -681,7 +681,9 @@ function(qt_generate_global_device_pri_file)
 
     # Write android specific device info.
     if(ANDROID)
+        file(TO_CMAKE_PATH ${ANDROID_SDK_ROOT} ANDROID_SDK_ROOT)
         string(APPEND content "DEFAULT_ANDROID_SDK_ROOT = ${ANDROID_SDK_ROOT}\n")
+        file(TO_CMAKE_PATH ${ANDROID_NDK} ANDROID_NDK)
         string(APPEND content "DEFAULT_ANDROID_NDK_ROOT = ${ANDROID_NDK}\n")
 
         set(android_platform "android-23")