diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c
index 3a1a2bf1717c..a802c6d4f4fd 100644
--- a/drivers/firewire/core-device.c
+++ b/drivers/firewire/core-device.c
@@ -322,7 +322,7 @@ static ssize_t show_immediate(struct device *dev,
 	if (value < 0)
 		return -ENOENT;
 
-	return snprintf(buf, PAGE_SIZE, "0x%06x\n", value);
+	return sysfs_emit(buf, "0x%06x\n", value);
 }
 
 #define IMMEDIATE_ATTR(name, key)				\
@@ -482,7 +482,7 @@ static ssize_t is_local_show(struct device *dev,
 {
 	struct fw_device *device = fw_device(dev);
 
-	return sprintf(buf, "%u\n", device->is_local);
+	return sysfs_emit(buf, "%u\n", device->is_local);
 }
 
 static int units_sprintf(char *buf, const u32 *directory)