diff --git a/passes/opt/muxpack.cc b/passes/opt/muxpack.cc
index bb2aa3cd7..55b1f5bcb 100644
--- a/passes/opt/muxpack.cc
+++ b/passes/opt/muxpack.cc
@@ -291,14 +291,14 @@ struct MuxpackWorker
 
 			if (make_excl) {
       /*   We create the following one-hot select line decoder
-            S0           S1              S2                  S3  ...
-            |            |										|
-            +--------+   +----------+		+--------------+		|
-            |       _|_  |					_|_		|							_|_		|
-            |       \_/  |					\_/		|							\_/		|
-            |        o   |					 o		|							 o		|
-            |        |   |	        |   |      __     |   |
-            |        +---------\    |   |     /  \    |   |
+            S0           S1             S2                S3   ...
+            |            |              |                 |
+            +--------+   +----------+		+-------------+   |
+            |       _|_  |         _|_  |            _|_  |
+            |       \_/  |         \_/  |            \_/  |
+            |        o   |          o   |             o   |
+            |        |   |          |   |      __     |   |
+            |        +----------+   |   |     /  \    |   |
             |        |   |      |___|   |    /    |___|   |
             |        |___|      \ & /  /    /     \ & /  /     ...
             |        \ & /       \_/  /    /       \_/  /     / 
@@ -306,9 +306,9 @@ struct MuxpackWorker
             |          |	        +------/          +-------/   
             |          |          |   |             |   |
             |          |          |___|             |___|
-            |          |					\ & /             \ & /
-            |          |					 \_/               \_/
-            |          |						|                 |
+            |          |          \ & /             \ & /
+            |          |           \_/               \_/
+            |          |            |                 |
             S0       S0'S1       S0'S1'S2         S0'S1'S2'S3  ...
 			*/
         SigSpec decodedSelect;