diff --git a/include/linux/xarray.h b/include/linux/xarray.h
index d6d5da6..66e28bc 100644
--- a/include/linux/xarray.h
+++ b/include/linux/xarray.h
@@ -9,6 +9,7 @@
  * See Documentation/core-api/xarray.rst for how to use the XArray.
  */
 
+#include <linux/bitmap.h>
 #include <linux/bug.h>
 #include <linux/compiler.h>
 #include <linux/gfp.h>