diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1cfb1f40f1..c3de69f84a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -766,7 +766,7 @@ endif()
 # IResearch
 # ------------------------------------------------------------------------------
 
-option(USE_IRESEARCH ON)
+option(USE_IRESEARCH OFF)
 
 if(USE_IRESEARCH)
   add_definitions("-DUSE_IRESEARCH=1")