diff --git a/packages/toolchain/devel/eglibc/build b/packages/toolchain/devel/eglibc/build
index 1d656fcfff..5fe28a8122 100755
--- a/packages/toolchain/devel/eglibc/build
+++ b/packages/toolchain/devel/eglibc/build
@@ -79,7 +79,8 @@ cat >option-groups.config <<EOF
 # needed by eglibc byself (todo):
   OPTION_EGLIBC_RTLD_DEBUG = y
 
-  OPTION_POSIX_REGEXP_GLIBC = n
+# needed for speed (optionally/todo)
+  OPTION_POSIX_REGEXP_GLIBC = y
 
 # needed for PAM:
   OPTION_EGLIBC_GETLOGIN = n