diff --git a/common/nanoBench.c b/common/nanoBench.c
index f35ddc4..7ccdcdc 100644
--- a/common/nanoBench.c
+++ b/common/nanoBench.c
@@ -1,3 +1,14 @@
+// nanoBench
+//   
+// Copyright (C) 2019 Andreas Abel
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of version 3 of the GNU Affero General Public License.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+
 #include "nanoBench.h"
 
 long n_measurements = N_MEASUREMENTS_DEFAULT;
diff --git a/common/nanoBench.h b/common/nanoBench.h
index ac2ea92..b66ff90 100644
--- a/common/nanoBench.h
+++ b/common/nanoBench.h
@@ -1,3 +1,14 @@
+// nanoBench
+//   
+// Copyright (C) 2019 Andreas Abel
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of version 3 of the GNU Affero General Public License.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+
 #ifndef NANOBENCH_H
 #define NANOBENCH_H
 
diff --git a/kernel/nb_km.c b/kernel/nb_km.c
index e0e7ef1..ceb9b10 100644
--- a/kernel/nb_km.c
+++ b/kernel/nb_km.c
@@ -1,3 +1,14 @@
+// nanoBench
+//   
+// Copyright (C) 2019 Andreas Abel
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of version 3 of the GNU Affero General Public License.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <../arch/x86/include/asm/fpu/api.h>
diff --git a/user/nanoBench_main.c b/user/nanoBench_main.c
index 59217ab..f4fd13d 100644
--- a/user/nanoBench_main.c
+++ b/user/nanoBench_main.c
@@ -1,3 +1,14 @@
+// nanoBench
+//   
+// Copyright (C) 2019 Andreas Abel
+//
+// This program is free software: you can redistribute it and/or modify it under the terms of version 3 of the GNU Affero General Public License.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+
 #define _GNU_SOURCE
 #include <stdio.h>
 #include <stdlib.h>