diff --git a/src/main.c b/src/main.c
index 1171e15..45f8327 100644
--- a/src/main.c
+++ b/src/main.c
@@ -282,7 +282,11 @@ static int eng_init() {
 		GLAD_GL_ARB_direct_state_access = 0;
 	}
 	
-	glfwSwapInterval(0);
+	if(k4_get_arg("vsync")) {
+		glfwSwapInterval(strtol(k4_get_arg("vsync"), NULL, 0));
+	} else {
+		glfwSwapInterval(0);
+	}
 	
 	printf("GL version: %s\n", glGetString(GL_VERSION));
 	printf("GL renderer: %s\n", glGetString(GL_RENDERER));