diff --git a/CMakeLists.txt b/CMakeLists.txt
index 162c971..da6ab64 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -59,6 +59,7 @@ target_sources(${PROJECT_NAME}
         PRIVATE
         src/window.cpp
         src/opengl_context.cpp
+        src/context_window.cpp
 
         PUBLIC
         FILE_SET public_headers
diff --git a/include/context_window.hpp b/include/context_window.hpp
index bb2315c..b7fee92 100644
--- a/include/context_window.hpp
+++ b/include/context_window.hpp
@@ -11,17 +11,9 @@ namespace window {
     public:
         ContextWindow() noexcept = delete;
 
-        explicit ContextWindow(const GLFWerrorfun error_clbk) noexcept {
-            glfwSetErrorCallback(error_clbk);
-            if (glfwInit() == GLFW_FALSE) {
-                init = false;
-            }
-            init = true;
-        }
+        explicit ContextWindow(const GLFWerrorfun error_clbk) noexcept;
 
-        ~ContextWindow() noexcept {
-            glfwTerminate();
-        }
+        ~ContextWindow() noexcept;
 
         [[nodiscard]] inline bool is_init() const { return init; }
     };
diff --git a/src/context_window.cpp b/src/context_window.cpp
new file mode 100644
index 0000000..0788147
--- /dev/null
+++ b/src/context_window.cpp
@@ -0,0 +1,15 @@
+#include "context_window.hpp"
+
+namespace window {
+    ContextWindow::ContextWindow(const GLFWerrorfun error_clbk) noexcept {
+        glfwSetErrorCallback(error_clbk);
+        if (glfwInit() == GLFW_FALSE) {
+            init = false;
+        }
+        init = true;
+    }
+
+    ContextWindow::~ContextWindow() noexcept {
+        glfwTerminate();
+    }
+}