1 files changed, 1 insertions, 0 deletions
diff --git a/b32.h b/b32.h
index 1555dd2..d3c0f55 100644
--- a/b32.h
+++ b/b32.h
@@ -2,6 +2,7 @@
 #define B32_B32_H
 
 #include <stdbool.h>
+#include <stddef.h>
 #include <stdint.h>
 
 bool b32toa(uint8_t *, const char *, size_t);