diff --git a/sysdeps/unix/sysv/linux/mips/kernel-features.h b/sysdeps/unix/sysv/linux/mips/kernel-features.h
index f479b60..f746c01 100644
--- a/sysdeps/unix/sysv/linux/mips/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/mips/kernel-features.h
@@ -31,4 +31,9 @@
 # define __ASSUME_FCNTL64		1
 #endif
 
+/* Support for PI futexes was added in 2.6.18.  */
+#if __LINUX_KERNEL_VERSION >= 132626
+ # define __ASSUME_FUTEX_LOCK_PI	1
+#endif
+
 #include_next <kernel-features.h>