diff --git a/arch/x86/include/asm/traps.h b/arch/x86/include/asm/traps.h
index 0d53425..9aa3ab2 100644
--- a/arch/x86/include/asm/traps.h
+++ b/arch/x86/include/asm/traps.h
@@ -74,7 +74,6 @@
 }
 
 extern int panic_on_unrecovered_nmi;
-extern int kstack_depth_to_print;
 
 void math_error(void __user *);
 void math_emulate(struct math_emu_info *);
diff --git a/arch/x86/kernel/dumpstack.h b/arch/x86/kernel/dumpstack.h
index da87590b..81086c2 100644
--- a/arch/x86/kernel/dumpstack.h
+++ b/arch/x86/kernel/dumpstack.h
@@ -29,7 +29,6 @@
 		unsigned long *sp, unsigned long bp, char *log_lvl);
 
 extern unsigned int code_bytes;
-extern int kstack_depth_to_print;
 
 /* The form of the top of the frame on the stack */
 struct stack_frame {