diff --git a/CMakeLists.txt b/CMakeLists.txt
index 93a4d9e..77dea5f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -61,6 +61,7 @@ set(ARCHEUS_STD_SOURCES
     src/std/vector.c
     src/std/defaults/config.c
 
+    src/math/circle.c
     src/math/rectangle.c
     src/math/vector2.c
 
@@ -74,6 +75,7 @@ set(ARCHEUS_STD_SDL_SOURCES
     src/input/sdl/keyboard.c
     src/input/sdl/mouse.c
 
+    src/graphics/sdl/circle.c
     src/graphics/sdl/config.c
     src/graphics/sdl/line.c
     src/graphics/sdl/rectangle.c