diff --git a/meta/recipes-sato/webkit/webkitgtk_2.48.0.bb b/meta/recipes-sato/webkit/webkitgtk_2.48.0.bb
index dfbf959054..bfd33835d1 100644
--- a/meta/recipes-sato/webkit/webkitgtk_2.48.0.bb
+++ b/meta/recipes-sato/webkit/webkitgtk_2.48.0.bb
@@ -57,6 +57,7 @@ PACKAGECONFIG ??= "${@bb.utils.filter('DISTRO_FEATURES', 'systemd wayland x11',
                    ${PACKAGECONFIG_SOUP} \
                   "
 
+PACKAGECONFIG[assertions] = "-DUSE_CXX_STDLIB_ASSERTIONS=ON,-DUSE_CXX_STDLIB_ASSERTIONS=OFF,"
 PACKAGECONFIG[wayland] = "-DENABLE_WAYLAND_TARGET=ON,-DENABLE_WAYLAND_TARGET=OFF,wayland libwpe wpebackend-fdo wayland-native"
 PACKAGECONFIG[angle] = "-DUSE_ANGLE_WEBGL=ON,-DUSE_ANGLE_WEBGL=OFF"
 PACKAGECONFIG[x11] = "-DENABLE_X11_TARGET=ON,-DENABLE_X11_TARGET=OFF,virtual/libx11 libxcomposite libxdamage libxrender libxt"