diff --git a/packages/3rdparty/web/tntnet/package.mk b/packages/3rdparty/web/tntnet/package.mk
index 29688f208e..1bae7bcbac 100644
--- a/packages/3rdparty/web/tntnet/package.mk
+++ b/packages/3rdparty/web/tntnet/package.mk
@@ -51,6 +51,8 @@ PKG_CONFIGURE_OPTS_TARGET="--disable-unittest \
                            --with-stressjob=no"
 
 post_makeinstall_target() {
+  $SED "s:\(['= ]\)/usr:\\1$SYSROOT_PREFIX/usr:g" $SYSROOT_PREFIX/usr/bin/tntnet-config
+
   rm -rf $INSTALL/usr/bin
   rm -rf $INSTALL/usr/share
 }