diff --git a/src/ppu.rs b/src/ppu.rs
index f3c1f0f611392c4fbca15f5bc8d2c940611fbb4b..8695ee6c78dc50fa8cc06820a06bc16bf25f1084 100644
--- a/src/ppu.rs
+++ b/src/ppu.rs
@@ -1254,6 +1254,8 @@ impl Ppu {
             false
         };
 
+        // iterates over the complete set of available object to checks
+        // the ones that required drawing and draws them
         for index in 0..OBJ_COUNT {
             // in case the limit on the number of objects to be draw per
             // line has been reached breaks the loop avoiding more draws