diff --git a/libs/error_injector/CMakeLists.txt b/libs/error_injector/CMakeLists.txt
index 0d5080458..8e84dde5c 100644
--- a/libs/error_injector/CMakeLists.txt
+++ b/libs/error_injector/CMakeLists.txt
@@ -43,7 +43,7 @@ if (ERROR_INJECTOR_MDNSRESPONDER)
     add_subdirectory(mdnsresponder)
 endif ()
 
-celix_subproject(ERROR_INJECTOR_JANSSON "Option to enable building the jansson error injector", OFF)
+celix_subproject(ERROR_INJECTOR_JANSSON "Option to enable building the jansson error injector", ON)
 if (ERROR_INJECTOR_JANSSON)
     add_subdirectory(jansson)
 endif ()