diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 0acad6bf30b..a43caf5b4f3 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -34,4 +34,6 @@ FIND_LIBRARY(EVENT_LIBRARY event)
 IF(HAVE_EVENT_H AND EVENT_LIBRARY)
   ADD_EXECUTABLE(async_queries async_queries.c)
   TARGET_LINK_LIBRARIES(async_queries mysqlclient ${EVENT_LIBRARY})
+  SET_TARGET_PROPERTIES(async_queries PROPERTIES LINKER_LANGUAGE CXX)
+
 ENDIF()