diff --git a/src/libmongoc/CMakeLists.txt b/src/libmongoc/CMakeLists.txt
index 9b2c2f845d..2231d76edc 100644
--- a/src/libmongoc/CMakeLists.txt
+++ b/src/libmongoc/CMakeLists.txt
@@ -28,7 +28,7 @@ set (MONGOC_ENABLE_COMPRESSION_ZLIB 0)
 set (MONGOC_ENABLE_COMPRESSION_ZSTD 0)
 
 if(NOT DEFINED MONGOC_INSTALL_INCLUDEDIR)
-   set(MONGOC_INSTALL_INCLUDEDIR "${CMAKE_INSTALL_INCLUDEDIR}/mongoc-${PROJECT_VERSION}")
+   set(MONGOC_INSTALL_INCLUDEDIR "${CMAKE_INSTALL_INCLUDEDIR}")
 endif()
 if(NOT DEFINED MONGOC_INSTALL_CMAKEDIR)
    set(MONGOC_INSTALL_CMAKEDIR "${MONGO_C_DRIVER_INSTALL_CMAKEDIR}/mongoc-${PROJECT_VERSION}")