diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6422ef6..0f5b72c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -198,7 +198,7 @@ add_executable(My3D
         lib/xmlparser/src/xmlparser.c
         lib/xmlparser/src/xmlproperties.c
         src/game_loader.c
-        main.c)
+        main.c lib/gamacon/include/errors.h lib/gamacon/src/ui/button.c lib/gamacon/src/ui/setup_ui.c lib/gamacon/include/ui.h)
 
 add_compile_options(-W -Wall -Wextra -Wshadow)
 
diff --git a/Makefile b/Makefile
index bf65782..8976365 100644
--- a/Makefile
+++ b/Makefile
@@ -23,7 +23,7 @@ CC = gcc
 
 all: build
 
-build: $(OBJ)
+$(NAME): $(OBJ)
 	$(MAKE) -C lib/gamacon
 	$(MAKE) -C lib/my
 	$(MAKE) -C lib/xmlparser
diff --git a/lib/gamacon b/lib/gamacon
index 1b3b69b..1a11c50 160000
--- a/lib/gamacon
+++ b/lib/gamacon
@@ -1 +1 @@
-Subproject commit 1b3b69b65b298eea3c4b98a3ce6392c54be1c1ed
+Subproject commit 1a11c5074a4d40df9c0bb1cdf9af4d275bc1a3dc
diff --git a/prefabs/game.gcprefab b/prefabs/game.gcprefab
index 20a1235..d7216f4 100644
--- a/prefabs/game.gcprefab
+++ b/prefabs/game.gcprefab
@@ -1,9 +1,11 @@
 <gc_scene>
     <data>
         <sprite src="assets/sprites/grass.png" />
+        <sprite name="button_background" src="assets/sprites/grass.png" />
         <font src="assets/fonts/roboto.ttf" />
     </data>
     <gc_entities>
+    	<button text="Button" x="75%" y="25%"/>
         <gc_entity>
             <transform_component />
             <renderer text="assets/sprites/grass.png" />