diff --git a/include/patty/ax25/address.h b/include/patty/ax25/address.h
new file mode 100644
index 0000000..ed501a6
--- /dev/null
+++ b/include/patty/ax25/address.h
@@ -0,0 +1,19 @@
+#ifndef _PATTY_AX25_ADDRESS_H
+#define _PATTY_AX25_ADDRESS_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+typedef struct _patty_ax25_address {
+    char callsign[7];
+
+    int ssid;
+    int last;
+
+    union {
+        int c;
+        int repeated;
+    };
+} patty_ax25_address;
+
+#endif /* _PATTY_AX25_ADDRESS_H */