diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c
index 08f07a74a9d3753184ab7a3096697eaac4d2cb98..88baed1e7e83a1469ecc33f1ed5e6e1c17a00af4 100644
--- a/arch/i386/kernel/smpboot.c
+++ b/arch/i386/kernel/smpboot.c
@@ -943,10 +943,9 @@ static int __cpuinit __smp_prepare_cpu(int cpu)
 
 static void smp_tune_scheduling(void)
 {
-	unsigned long cachesize;       /* kB   */
-
 	if (cpu_khz) {
-		cachesize = boot_cpu_data.x86_cache_size;
+		/* cache size in kB */
+		long cachesize = boot_cpu_data.x86_cache_size;
 
 		if (cachesize > 0)
 			max_cache_size = cachesize * 1024;