diff --git a/src/window.c b/src/window.c
index e153bc27..17410e13 100644
--- a/src/window.c
+++ b/src/window.c
@@ -215,6 +215,10 @@ GLFWAPI GLFWwindow* glfwCreateWindow(int width, int height,
     window->numer       = GLFW_DONT_CARE;
     window->denom       = GLFW_DONT_CARE;
 
+    window->preeditCursorPosX = 0;
+    window->preeditCursorPosY = height;
+    window->preeditCursorHeight = 0;
+
     if (!_glfw.platform.createWindow(window, &wndconfig, &ctxconfig, &fbconfig))
     {
         glfwDestroyWindow((GLFWwindow*) window);