diff --git a/.gitignore b/.gitignore
index 5389463..b5b94e1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,5 @@
 .out
 
 # Folders
-gtkwave
\ No newline at end of file
+gtkwave
+testbench
\ No newline at end of file
diff --git a/cpu/alu/alu.sv b/cpu/alu/alu.sv
index 08ec301..211b669 100644
--- a/cpu/alu/alu.sv
+++ b/cpu/alu/alu.sv
@@ -47,7 +47,7 @@ always @(*) begin
         alu_out = tmpOut;
     end
 
-    //TODO: improve this part using increment/decrement logic
+    //TODO: improve following using increment/decrement logic
     if (alu_out < 0)
         flag = 0;   // negative flag
     else if (alu_out = 0)