diff --git a/arch/x86/lib/misc.c b/arch/x86/lib/misc.c
index 92cd8ecc3a2c8..40b81c338ae5b 100644
--- a/arch/x86/lib/misc.c
+++ b/arch/x86/lib/misc.c
@@ -8,7 +8,7 @@
  */
 int num_digits(int val)
 {
-	int m = 10;
+	long long m = 10;
 	int d = 1;
 
 	if (val < 0) {