diff --git a/third_party/SConscript b/third_party/SConscript
index 5a7a62ae5a..e5bbfaa07a 100644
--- a/third_party/SConscript
+++ b/third_party/SConscript
@@ -1,6 +1,6 @@
 Import('env')
 
-env.Library('json11', ['json11/json11.cpp'])
+env.Library('json11', ['json11/json11.cpp'], CCFLAGS=env['CCFLAGS'] + ['-Wno-unqualified-std-cast-call'])
 env.Append(CPPPATH=[Dir('json11')])
 
 env.Library('kaitai', ['kaitai/kaitaistream.cpp'], CPPDEFINES=['KS_STR_ENCODING_NONE'])