diff --git a/tools/testing/radix-tree/linux/gfp.h b/tools/testing/radix-tree/linux/gfp.h
index 0e37f7a760ebd262e23a7cdf4fd901be32ce0ea2..5201b915f631fc9df916e9aa476735323c6d9e62 100644
--- a/tools/testing/radix-tree/linux/gfp.h
+++ b/tools/testing/radix-tree/linux/gfp.h
@@ -1,7 +1,7 @@
 #ifndef _GFP_H
 #define _GFP_H
 
-#define __GFP_BITS_SHIFT 22
+#define __GFP_BITS_SHIFT 26
 #define __GFP_BITS_MASK ((gfp_t)((1 << __GFP_BITS_SHIFT) - 1))
 #define __GFP_WAIT 1
 #define __GFP_ACCOUNT 0