diff --git a/package/qt5/qt5webkit/qt5webkit.mk b/package/qt5/qt5webkit/qt5webkit.mk
index 300b9d9904..33b775d06e 100644
--- a/package/qt5/qt5webkit/qt5webkit.mk
+++ b/package/qt5/qt5webkit/qt5webkit.mk
@@ -7,7 +7,7 @@
 QT5WEBKIT_VERSION = $(QT5_VERSION)
 QT5WEBKIT_SITE = $(QT5_SITE)
 QT5WEBKIT_SOURCE = qtwebkit-opensource-src-$(QT5WEBKIT_VERSION).tar.xz
-QT5WEBKIT_DEPENDENCIES = qt5base sqlite host-ruby host-gperf host-bison
+QT5WEBKIT_DEPENDENCIES = qt5base sqlite host-ruby host-gperf host-bison host-flex
 QT5WEBKIT_INSTALL_STAGING = YES
 
 ifeq ($(BR2_PACKAGE_QT5BASE_LICENSE_APPROVED),y)