diff --git a/sprout/logic/tribool/io.hpp b/sprout/logic/tribool/io.hpp
index f249e39b..998da98e 100644
--- a/sprout/logic/tribool/io.hpp
+++ b/sprout/logic/tribool/io.hpp
@@ -172,7 +172,7 @@ namespace sprout {
 					} else {
 						if (falsename_ok) {
 							rhs = false;
-						} else if (truename_ok)	{ 
+						} else if (truename_ok)	{
 							rhs = true;
 						} else if (othername_ok) {
 							rhs = indeterminate;