diff --git a/include/linux/profile.h b/include/linux/profile.h
index eec48f5f9348efd17ba2fd47d6a4d38cc31be100..ff576d1db67de07a090f40bcd93d75c71d879500 100644
--- a/include/linux/profile.h
+++ b/include/linux/profile.h
@@ -78,9 +78,6 @@ int profile_event_unregister(enum profile_type, struct notifier_block * n);
 int register_timer_hook(int (*hook)(struct pt_regs *));
 void unregister_timer_hook(int (*hook)(struct pt_regs *));
 
-/* Timer based profiling hook */
-extern int (*timer_hook)(struct pt_regs *);
-
 struct pt_regs;
 
 #else
diff --git a/kernel/profile.c b/kernel/profile.c
index 6f69bf792d964b7e262f7f5c066375d8fdeb8c77..631b75c25d7ed40c9a38b4e52244f58f4436d74b 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -37,7 +37,7 @@ struct profile_hit {
 #define NR_PROFILE_GRP		(NR_PROFILE_HIT/PROFILE_GRPSZ)
 
 /* Oprofile timer tick hook */
-int (*timer_hook)(struct pt_regs *) __read_mostly;
+static int (*timer_hook)(struct pt_regs *) __read_mostly;
 
 static atomic_t *prof_buffer;
 static unsigned long prof_len, prof_shift;