--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -59,9 +59,6 @@ if(CMAKE_PROJECT_NAME STREQUAL PROJECT_N
   include(CTest)
 endif()
 
-# Include core library
-add_subdirectory(cmake/h3)
-
 # Include extensions and their shared code
 add_subdirectory(include)
 add_subdirectory(h3)
