diff --git a/src/whereami.c b/src/whereami.c
index 971c740..19d6460 100644
--- a/src/whereami.c
+++ b/src/whereami.c
@@ -1,4 +1,5 @@
 // (‑●‑●)> released under the WTFPL v2 license, by Gregory Pakosz (@gpakosz)
+// https://github.com/gpakosz/whereami
 
 // in case you want to #include "whereami.c" in a larger compilation unit
 #if !defined(WHEREAMI_H)
diff --git a/src/whereami.h b/src/whereami.h
index b25c60a..6c81af8 100644
--- a/src/whereami.h
+++ b/src/whereami.h
@@ -1,4 +1,5 @@
 // (‑●‑●)> released under the WTFPL v2 license, by Gregory Pakosz (@gpakosz)
+// https://github.com/gpakosz/whereami
 
 #ifndef WHEREAMI_H
 #define WHEREAMI_H