diff --git a/basis/html/streams/streams-tests.factor b/basis/html/streams/streams-tests.factor
index 6c03d16178..354a1c4079 100644
--- a/basis/html/streams/streams-tests.factor
+++ b/basis/html/streams/streams-tests.factor
@@ -49,7 +49,7 @@ M: funky url-of "http://www.funky-town.com/" swap town>> append ;
     ] make-html-string
 ] unit-test
 
-{ "<div style=\"background-color: #ff00ff; white-space: pre; font-family: monospace; display: inline-block;\">cdr</div>" }
+{ "<div style=\"background-color: #ff00ff; white-space: pre; font-family: monospace; display: inline-block; \">cdr</div>" }
 [
     [
         H{ { page-color T{ rgba f 1 0 1 1 } } }
@@ -57,7 +57,7 @@ M: funky url-of "http://www.funky-town.com/" swap town>> append ;
     ] make-html-string
 ] unit-test
 
-{ "<div style=\"white-space: pre; font-family: monospace; display: inline-block;\"></div><br/>" } [
+{ "<div style=\"white-space: pre; font-family: monospace; display: inline-block; \"></div><br/>" } [
     [ H{ } [ ] with-nesting nl ] make-html-string
 ] unit-test
 
diff --git a/basis/html/streams/streams.factor b/basis/html/streams/streams.factor
index 978ae1e0ef..cf413dde11 100644
--- a/basis/html/streams/streams.factor
+++ b/basis/html/streams/streams.factor
@@ -111,7 +111,7 @@ M: html-span-stream dispose
 : padding-css, ( padding -- )
     first2 (padding-css,) ;
 
-CONSTANT: pre-css "white-space: pre; font-family: monospace;"
+CONSTANT: pre-css "white-space: pre; font-family: monospace; "
 
 : div-css-style ( style -- str )
     [