diff --git a/CMakeLists.txt b/CMakeLists.txt
index a6e27fe..406a1fc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -58,7 +58,6 @@ add_library(${PROJECT_NAME}
   src/quat.c
   src/cam.c
   src/vec2.c
-  src/vec2.c
   src/vec3.c
   src/vec4.c
   src/mat2.c