1 files changed, 2 insertions, 0 deletions
diff --git a/l4str.h b/l4str.h
index cda3c1d..b041e22 100644
--- a/l4str.h
+++ b/l4str.h
@@ -3,11 +3,13 @@
 #define LBS_STR_H
 
 #include <l4common.h>
+#include <stdarg.h>
 
 #define LBS_STR_STATIC_STRLEN(x) (sizeof(x)/sizeof(char) - 1)
 #define LBS_STR_ARRAY_LEN(x,t)   (sizeof(x)/sizeof(t))
 
 bool    lbs_str_has_suffix       (const char* str, const char* suffix);
 char*   lbs_str_printf           (const char* format, ...);
+char*   lbs_str_vprintf          (const char* format, va_list ap);
 
 #endif /* LBS_STR_H */