diff --git a/build/Jamfile.v2 b/build/Jamfile.v2
index d428a2d2..c8ccd3a5 100644
--- a/build/Jamfile.v2
+++ b/build/Jamfile.v2
@@ -153,6 +153,6 @@ lib boost_regex : ../src/$(SOURCES) icu_options
     :
         <link>shared:<define>BOOST_REGEX_DYN_LINK=1
         <toolset>gcc-cygwin:<link>static
-    : : :
+    : :
         <define>BOOST_REGEX_NO_LIB=1
     ;