diff --git a/config.def.h b/config.def.h
index 80cb48c3..39c17994 100644
--- a/config.def.h
+++ b/config.def.h
@@ -1,3 +1,4 @@
+/* See LICENSE file for copyright and license details. */
 #define CWD "cwd: "
 #define CURSR " > "
 #define EMPTY "   "
diff --git a/noice.c b/noice.c
index 12de74ac..9955a8d3 100644
--- a/noice.c
+++ b/noice.c
@@ -1,3 +1,4 @@
+/* See LICENSE file for copyright and license details. */
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/wait.h>
diff --git a/util.h b/util.h
index b1540858..c4d1904b 100644
--- a/util.h
+++ b/util.h
@@ -1,3 +1,4 @@
+/* See LICENSE file for copyright and license details. */
 #undef strlcat
 size_t strlcat(char *, const char *, size_t);
 #undef strlcpy