diff --git a/contrib/db/libmdbx/CMakeLists.txt b/contrib/db/libmdbx/CMakeLists.txt
index 5200edcb..208f12dc 100644
--- a/contrib/db/libmdbx/CMakeLists.txt
+++ b/contrib/db/libmdbx/CMakeLists.txt
@@ -2,15 +2,15 @@
 if(WIN32)
   message(STATUS "MDBX locks: lck-windows.c")
   set (mdbx_sources src/mdbx.c src/osal.c src/version.c src/lck-windows.c )
-elseif(APPLE)
-  message(STATUS "MDBX locks: lck-posix.c")
-  set (mdbx_sources src/mdbx.c src/osal.c src/version.c src/lck-posix.c )
-else()
+elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
   message(STATUS "MDBX locks: lck-linux.c")
   set (mdbx_sources src/mdbx.c src/osal.c src/version.c src/lck-linux.c )
+else
+  message(STATUS "MDBX locks: lck-posix.c")
+  set (mdbx_sources src/mdbx.c src/osal.c src/version.c src/lck-posix.c )
 endif()
 
-
+ 
 
 include_directories("${CMAKE_CURRENT_SOURCE_DIR}")