diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c
index ccd624e..f4de4b9 100644
--- a/fs/affs/amigaffs.c
+++ b/fs/affs/amigaffs.c
@@ -445,7 +445,7 @@
 	va_list	 args;
 
 	va_start(args,fmt);
-	vsprintf(ErrorBuffer,fmt,args);
+	vsnprintf(ErrorBuffer,sizeof(ErrorBuffer),fmt,args);
 	va_end(args);
 
 	printk(KERN_CRIT "AFFS error (device %s): %s(): %s\n", sb->s_id,
@@ -461,7 +461,7 @@
 	va_list	 args;
 
 	va_start(args,fmt);
-	vsprintf(ErrorBuffer,fmt,args);
+	vsnprintf(ErrorBuffer,sizeof(ErrorBuffer),fmt,args);
 	va_end(args);
 
 	printk(KERN_WARNING "AFFS warning (device %s): %s(): %s\n", sb->s_id,