diff --git a/src/1.getting_started/6.3.coordinate_systems_multiple/6.3.coordinate_systems.fs b/src/1.getting_started/6.3.coordinate_systems_multiple/6.3.coordinate_systems.fs
index be379bd..91b9fe8 100644
--- a/src/1.getting_started/6.3.coordinate_systems_multiple/6.3.coordinate_systems.fs
+++ b/src/1.getting_started/6.3.coordinate_systems_multiple/6.3.coordinate_systems.fs
@@ -3,10 +3,10 @@ out vec4 FragColor;
 
 in vec2 TexCoord;
 
-uniform sampler2D ourTexture1;
-uniform sampler2D ourTexture2;
+uniform sampler2D texture1;
+uniform sampler2D texture2;
 
 void main()
 {
-    FragColor = mix(texture(ourTexture1, TexCoord), texture(ourTexture2, TexCoord), 0.2);
+    FragColor = mix(texture(texture1, TexCoord), texture(texture2, TexCoord), 0.2);
 }
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