diff --git a/src/system/libroot/Jamfile b/src/system/libroot/Jamfile
index 2a1a98c1cc..f169fddca9 100644
--- a/src/system/libroot/Jamfile
+++ b/src/system/libroot/Jamfile
@@ -27,6 +27,7 @@ local librootObjects =
 	posix_gnu_regex.o
 	posix_gnu_stdio.o
 	posix_gnu_stdlib.o
+	posix_gnu_string.o
 	posix_gnu_wcsmbs.o
 	posix_gnu_wctype.o
 	posix_stdlib.o