diff --git a/iverilog/nand2tetris/nands/andGate.v b/iverilog/nand2tetris/nands/andGate.v
index 69a32ba..3cb4253 100644
--- a/iverilog/nand2tetris/nands/andGate.v
+++ b/iverilog/nand2tetris/nands/andGate.v
@@ -1,7 +1,7 @@
 module andGate (
-    input  wire A_i,
-    input  wire B_i,
-    output wire Y_o
+   input  wire A_i,
+   input  wire B_i,
+   output wire Y_o
 );
 
    wire nand_out;
diff --git a/iverilog/nand2tetris/nands/andGate.v.orig b/iverilog/nand2tetris/nands/andGate.v.orig
new file mode 100644
index 0000000..abb0513
--- /dev/null
+++ b/iverilog/nand2tetris/nands/andGate.v.orig
@@ -0,0 +1,13 @@
+module andGate (
+      input wire A_i,
+      input wire B_i,
+      output wire Y_o
+   );
+
+   wire nand_out;
+
+   nand nand1 ( nand_out, A_i, B_i );
+   nand nand2 ( Y_o, nand_out, nand_out );
+
+endmodule
+