diff --git a/thirdparty/Makefile.inc b/thirdparty/Makefile.inc
index f3cf47582..825f8c1c3 100644
--- a/thirdparty/Makefile.inc
+++ b/thirdparty/Makefile.inc
@@ -69,6 +69,7 @@ libconfig: | libconfig-fix
 libconfig-fix:
 	rm -f $(SRCDIR)/thirdparty/libconfig/lib/scanner.[hc]
 
+jansson: CMAKE_OPTS += -DJANSSON_BUILD_DOCS=OFF
 libwebsockets: CMAKE_OPTS += -DLWS_IPV6=1 -DLWS_WITH_STATIC=0 -DLWS_WITHOUT_TESTAPPS=1 -DLWS_WITH_HTTP2=1
 libzmq: CONFIGURE_OPTS += --with-libsodium --with-pgm --enable-drafts