diff --git a/test_regress/t/t_pp_display.pl b/test_regress/t/t_pp_display.pl
index 18d89e53f..d51bcd4ef 100755
--- a/test_regress/t/t_pp_display.pl
+++ b/test_regress/t/t_pp_display.pl
@@ -16,11 +16,11 @@ execute (
 'pre thrupre thrumid thrupost post: "right side"
 left side: "right side"
 left side : "right side "
-left_side : "left_side "
-na : "left_side "
-prep ( midp1 left_side midp2 ( outp ) ) : "left_side "
+left_side : "right_side "
+na : "right_side "
+prep ( midp1 left_side midp2 ( outp ) ) : "right_side "
 na: "nana"
-left_side left_side : "left_side left_side "
+`ls `rs : "`ls `rs "
 : ""
 left side: "right side"
 left side  : "right side  "
diff --git a/test_regress/t/t_pp_display.v b/test_regress/t/t_pp_display.v
index 8ff1627ce..ec02a6854 100644
--- a/test_regress/t/t_pp_display.v
+++ b/test_regress/t/t_pp_display.v
@@ -13,8 +13,8 @@ module t;
    add2 add2 (d2,o2);
 
 `define ls left_side
-`define rs left_side
-`define noarg  na
+`define rs right_side
+`define noarg  na//note extra space
 `define thru(x) x
 `define thruthru `ls `rs	// Doesn't expand
 `define msg(x,y) `"x: `\`"y`\`"`"