diff --git a/src/libtwirc.c b/src/libtwirc.c
index 929b3f7..6259e2e 100644
--- a/src/libtwirc.c
+++ b/src/libtwirc.c
@@ -1231,7 +1231,7 @@ twirc_get_callbacks(twirc_state_t *s)
  * a NULL pointer if any errors occur during initialization.
  */
 twirc_state_t*
-twirc_init()
+twirc_init(void)
 {
 	// Seed the random number generator
 	srand(time(NULL));
diff --git a/src/libtwirc.h b/src/libtwirc.h
index 8b81779..24c9724 100644
--- a/src/libtwirc.h
+++ b/src/libtwirc.h
@@ -1,6 +1,8 @@
 #ifndef LIBTWIRC_H
 #define LIBTWIRC_H
 
+#include <stdint.h>
+
 // Name & Version
 #define TWIRC_NAME "libtwirc"
 #define TWIRC_VER_MAJOR 0
@@ -200,7 +202,7 @@ struct twirc_callbacks
  */
 
 // Initialization
-twirc_state_t     *twirc_init();
+twirc_state_t     *twirc_init(void);
 twirc_callbacks_t *twirc_get_callbacks(twirc_state_t *s);
 
 // Connecting and disconnecting