diff --git a/lib/printf.c b/lib/printf.c
index 84eedb396..64da212a8 100644
--- a/lib/printf.c
+++ b/lib/printf.c
@@ -376,7 +376,8 @@ out:
 	return pc;
 }
 
-/*
+#define BLOCK_MEM_SIZE 1024
+
 int sprintf( char *out, const char *format, ... )
 {
 	int		retval = 0;
@@ -392,7 +393,6 @@ int sprintf( char *out, const char *format, ... )
 
 	return retval;
 }
-*/
 
 int printf( const char *format, ... )
 {