diff --git a/3party/CMakeLists.txt b/3party/CMakeLists.txt
index 5178ae0b5..d40fec05f 100644
--- a/3party/CMakeLists.txt
+++ b/3party/CMakeLists.txt
@@ -31,6 +31,7 @@ if (NOT WITH_SYSTEM_PROVIDED_3PARTY)
   set(JANSSON_WITHOUT_TESTS ON)
   add_subdirectory(jansson/jansson/)
   target_include_directories(jansson INTERFACE "${PROJECT_BINARY_DIR}/3party/jansson/jansson/include")
+  add_library(jansson::jansson ALIAS jansson)
 
   # Add gflags library.
   set(GFLAGS_BUILD_TESTING OFF)