diff --git a/vendor/gopkg.in/olebedev/go-duktape.v3/duk_minimal_printf.c b/vendor/gopkg.in/olebedev/go-duktape.v3/duk_minimal_printf.c
index e4b6e43a..baed990d 100755
--- a/vendor/gopkg.in/olebedev/go-duktape.v3/duk_minimal_printf.c
+++ b/vendor/gopkg.in/olebedev/go-duktape.v3/duk_minimal_printf.c
@@ -278,6 +278,7 @@ int duk_minimal_snprintf(char *str, size_t size, const char *format, ...) {
 }
 
 /* Minimal sprintf() entry point. */
+#if 0
 int duk_minimal_sprintf(char *str, const char *format, ...) {
 	va_list ap;
 	int ret;
@@ -288,6 +289,7 @@ int duk_minimal_sprintf(char *str, const char *format, ...) {
 
 	return ret;
 }
+#endif
 
 /* Minimal sscanf() entry point. */
 int duk_minimal_sscanf(const char *str, const char *format, ...) {