diff --git a/drivers/firmware/dell_rbu.c b/drivers/firmware/dell_rbu.c
index 13946eb..b4704e1 100644
--- a/drivers/firmware/dell_rbu.c
+++ b/drivers/firmware/dell_rbu.c
@@ -576,7 +576,7 @@
 {
 	int size = 0;
 	if (!pos)
-		size = sprintf(buffer, "%s\n", image_type);
+		size = scnprintf(buffer, count, "%s\n", image_type);
 	return size;
 }
 
@@ -648,7 +648,7 @@
 	int size = 0;
 	if (!pos) {
 		spin_lock(&rbu_data.lock);
-		size = sprintf(buffer, "%lu\n", rbu_data.packetsize);
+		size = scnprintf(buffer, count, "%lu\n", rbu_data.packetsize);
 		spin_unlock(&rbu_data.lock);
 	}
 	return size;