1 files changed, 5 insertions, 0 deletions
diff --git a/src/sprintf.c b/src/sprintf.c
index 296a7c73e..c7e7badc4 100644
--- a/src/sprintf.c
+++ b/src/sprintf.c
@@ -5,6 +5,9 @@
 */
 
 #include "mruby.h"
+
+#ifdef INCLUDE_KERNEL_SPRINTF
+
 #include <stdio.h>
 #include <string.h>
 #include "encoding.h"
@@ -1078,3 +1081,5 @@ fmt_setup(char *buf, size_t size, int c, int flags, int width, int prec)
     *buf++ = c;
     *buf = '\0';
 }
+
+#endif //INCLUDE_KERNEL_SPRINTF