diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2c5ca97e..0fadcdad 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -46,7 +46,7 @@ set(EVENT__LIBRARY_TYPE DEFAULT CACHE STRING
 
 project(libevent C)
 
-set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake/")
+list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake/")
 string(REGEX MATCH "SunOS" SOLARIS "${CMAKE_SYSTEM_NAME}")