diff --git a/[refs] b/[refs]
index d7dd55c551ba..90a9bd8541df 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4ca9b72b71f10147bd21969c1805f5b2c4ca7b7b
+refs/heads/master: db7e527da41560f597ccdc4417cefa6b7657c0c0
diff --git a/trunk/kernel/sched/core.c b/trunk/kernel/sched/core.c
index e067df1fd01a..5255c9d2e053 100644
--- a/trunk/kernel/sched/core.c
+++ b/trunk/kernel/sched/core.c
@@ -74,6 +74,7 @@
 
 #include <asm/tlb.h>
 #include <asm/irq_regs.h>
+#include <asm/mutex.h>
 #ifdef CONFIG_PARAVIRT
 #include <asm/paravirt.h>
 #endif