diff --git a/resources/objects/rock/Rock-Texture-Surface.jpg b/resources/objects/rock/Rock-Texture-Surface.jpg
deleted file mode 100644
index f7810a2..0000000
Binary files a/resources/objects/rock/Rock-Texture-Surface.jpg and /dev/null differ
diff --git a/resources/objects/rock/rock.mtl b/resources/objects/rock/rock.mtl
index ee5d92c..1b250bd 100644
--- a/resources/objects/rock/rock.mtl
+++ b/resources/objects/rock/rock.mtl
@@ -9,5 +9,5 @@ Ks 0.007937 0.007937 0.007937
 Ni 1.000000
 d 1.000000
 illum 2
-map_Bump Rock-Texture-Surface.jpg
-map_Kd Rock-Texture-Surface.jpg
+map_Kd rock.png
+map_Bump rock.png
diff --git a/resources/objects/rock/rock.png b/resources/objects/rock/rock.png
new file mode 100644
index 0000000..7f653b4
Binary files /dev/null and b/resources/objects/rock/rock.png differ