diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4da28f15..296491d1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -116,8 +116,8 @@ set(NANO_FUZZER_TEST
     OFF
     CACHE BOOL "")
 set(NANO_ASIO_HANDLER_TRACKING
-    0
-    CACHE STRING "")
+    OFF
+    CACHE BOOL "")
 set(NANO_ROCKSDB_TOOLS
     OFF
     CACHE BOOL "")
@@ -153,9 +153,8 @@ if(${NANO_TIMED_LOCKS} GREATER 0)
   endif()
 endif()
 
-if(${NANO_ASIO_HANDLER_TRACKING} GREATER 0)
-  add_definitions(-DNANO_ASIO_HANDLER_TRACKING=${NANO_ASIO_HANDLER_TRACKING}
-                  -DBOOST_ASIO_ENABLE_HANDLER_TRACKING)
+if(NANO_ASIO_HANDLER_TRACKING)
+  add_definitions(-DBOOST_ASIO_ENABLE_HANDLER_TRACKING)
 endif()
 
 option(NANO_SIMD_OPTIMIZATIONS