diff --git a/.gitignore b/.gitignore
index 253352d..7f70d41 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,4 @@ libtun-test-*
 *.o
 *.obj
 *.lst
+dub.json
diff --git a/dub.json b/dub.json
index 04e82c4..cca6b8d 100644
--- a/dub.json
+++ b/dub.json
@@ -6,7 +6,7 @@
 	"description": "TUN adapter for D",
 	"license": "GPLv3",
 	"name": "libtun",
-	"targetType": "executable",
+	"targetType": "library",
 	"preBuildCommands": ["gcc source/libtun/tunctl.c -o tunctl.o -c"],
 	"lflags": ["tunctl.o"]
 }
\ No newline at end of file
diff --git a/source/app.d b/source/libtun/testing/app.d
similarity index 92%
rename from source/app.d
rename to source/libtun/testing/app.d
index 5768c52..db05122 100644
--- a/source/app.d
+++ b/source/libtun/testing/app.d
@@ -1,3 +1,5 @@
+module libtun.testing.app;
+
 import std.stdio;
 
 import libtun.adapter;