diff --git a/CMakeLists.txt b/CMakeLists.txt
index 60fc07de..3eb6c5b2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -43,7 +43,6 @@ set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
 include(CheckFunctionExists)
 include(CheckSymbolExists)
 include(CheckIncludeFiles)
-include(CheckSymbolExists)
 include(CMakePushCheckState)
 include(FeatureSummary)