diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1b9ba570d..52638c064 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -503,6 +503,7 @@ if(STATIC)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DZMQ_STATIC")
 endif()
 
+option(SANITIZE "Use ASAN memory sanitizer" OFF)
 if(SANITIZE)
   if (MSVC)
     message(FATAL_ERROR "Cannot sanitize with MSVC")