diff --git a/samples/bluetooth/peripheral/CMakeLists.txt b/samples/bluetooth/peripheral/CMakeLists.txt
index 8527169a88b..372514f0c1c 100644
--- a/samples/bluetooth/peripheral/CMakeLists.txt
+++ b/samples/bluetooth/peripheral/CMakeLists.txt
@@ -6,7 +6,5 @@ project(peripheral)
 
 target_sources(app PRIVATE
   src/main.c
-  ../gatt/cts.c
+  src/cts.c
 )
-
-zephyr_library_include_directories($ENV{ZEPHYR_BASE}/samples/bluetooth)
diff --git a/samples/bluetooth/gatt/cts.c b/samples/bluetooth/peripheral/src/cts.c
similarity index 100%
rename from samples/bluetooth/gatt/cts.c
rename to samples/bluetooth/peripheral/src/cts.c
diff --git a/samples/bluetooth/gatt/cts.h b/samples/bluetooth/peripheral/src/cts.h
similarity index 100%
rename from samples/bluetooth/gatt/cts.h
rename to samples/bluetooth/peripheral/src/cts.h
diff --git a/samples/bluetooth/peripheral/src/main.c b/samples/bluetooth/peripheral/src/main.c
index 95dce1e0843..1b23d1998b9 100644
--- a/samples/bluetooth/peripheral/src/main.c
+++ b/samples/bluetooth/peripheral/src/main.c
@@ -24,7 +24,7 @@
 #include <bluetooth/services/bas.h>
 #include <bluetooth/services/hrs.h>
 
-#include <gatt/cts.h>
+#include "cts.h"
 
 /* Custom Service Variables */
 static struct bt_uuid_128 vnd_uuid = BT_UUID_INIT_128(