diff --git a/Makefile b/Makefile
index 5aa9300..e6e7ede 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,10 @@
 CC=gcc
+LDFLAGS= -lglfw -lGL
 OUT=run
 
 all: lodepng.o
 	$(CC) -O2 -o $(OUT) \
-	lodepng.o \
-	main.c -lglfw -lGL -lGLU
+	main.c lodepng.o $(LDFLAGS)
 
 lodepng.o:
 	$(CC) -c ./deps/lodepng/lodepng.c
diff --git a/main.c b/main.c
index 27f151d..b04d9bc 100644
--- a/main.c
+++ b/main.c
@@ -14,8 +14,6 @@ int main(int argc, char const *argv[])
   if (!glfwInit())
     return -1;
 
-  glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 1);
-  glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 4);
   glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
   window = glfwCreateWindow(400, 400, "Example Lodepng", NULL, NULL);
   
@@ -38,7 +36,7 @@ int main(int argc, char const *argv[])
   unsigned char *image;
   unsigned int width, height;
 
-  const char *filename = argc > 1 ? argv[1] : "textures/Nav.png";
+  const char *filename = argc > 1 ? argv[1] : "textures/nav.png";
 
   error = lodepng_decode32_file(&image, &width, &height, filename);
   if (error)
@@ -56,17 +54,18 @@ int main(int argc, char const *argv[])
     glLoadIdentity();
     glOrtho(0, 400, 400, 0, -1, 1);
     glMatrixMode(GL_MODELVIEW);
-    glLoadIdentity();
 
     glClearColor(1, 1, 1, 0);
     glClear(GL_COLOR_BUFFER_BIT);
 
+    glLoadIdentity();
+
     glBindTexture(GL_TEXTURE_2D, texture);
     glEnable(GL_TEXTURE_2D);
     glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
     
     glColor3ub(255, 235, 115);
-    glBegin(GL_QUADS);
+    glBegin(GL_POLYGON);
       glTexCoord2f(0, 0); glVertex2f(50,  50);
       glTexCoord2f(1, 0); glVertex2f(350,  50);
       glTexCoord2f(1, 1); glVertex2f(350, 350);