diff --git a/haiku-libs/haikuwebkit/haikuwebkit-1.9.11.recipe b/haiku-libs/haikuwebkit/haikuwebkit-1.9.11.recipe
index 610e46e5b..ceb93183a 100644
--- a/haiku-libs/haikuwebkit/haikuwebkit-1.9.11.recipe
+++ b/haiku-libs/haikuwebkit/haikuwebkit-1.9.11.recipe
@@ -104,6 +104,7 @@ BUILD()
 	export DISABLE_ASLR=1
 	export PKG_CONFIG_LIBDIR="`finddir B_SYSTEM_DIRECTORY`/$relativeDevelopLibDir/pkgconfig"
 	export CC=`which gcc`
+	export CXXFLAGS="-fpermissive"
 	Tools/Scripts/build-webkit --haiku --no-webkit2 --no-fatal-warnings \
 		--cmakeargs="-DCMAKE_INSTALL_PREFIX=$prefix -DCMAKE_BUILD_TYPE=Release -DSHOULD_INSTALL_JS_SHELL=ON"
 }