diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 082d996426226441360d912d55254ce07a96346b..66d900248fc2b38ac17c990c119f70ec125c7446 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -22,7 +22,7 @@
 
 
 /* Long is fine, even if it is only 4 bytes ;-) */
-static long *ftrace_nop;
+static unsigned long *ftrace_nop;
 
 union ftrace_code_union {
 	char code[MCOUNT_INSN_SIZE];