diff --git a/tools/chatgui/libutun/CMakeLists.txt b/tools/chatgui/libutun/CMakeLists.txt
index d81e7f0b..2daf4c7f 100644
--- a/tools/chatgui/libutun/CMakeLists.txt
+++ b/tools/chatgui/libutun/CMakeLists.txt
@@ -8,8 +8,12 @@ set(TRANSPORT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../transport)
 # libuasync — low-level runtime library
 # ============================================================================
 
-file(GLOB UASYNC_SOURCES "${LIB_DIR}/*.c" "${LIB_DIR}/liblmdb/*.c")
-list(FILTER UASYNC_SOURCES EXCLUDE REGEX "/lmdb/(mtest[0-9]*\\.c|mtest\\.c|mdb_copy\\.c|mdb_dump\\.c|mdb_load\\.c|mdb_stat\\.c|mplay\\.c)$")
+file(GLOB UASYNC_SOURCES "${LIB_DIR}/*.c")
+set(UASYNC_LMDB_SOURCES
+    "${LIB_DIR}/liblmdb/mdb.c"
+    "${LIB_DIR}/liblmdb/midl.c"
+)
+list(APPEND UASYNC_SOURCES ${UASYNC_LMDB_SOURCES})
 
 add_library(uasync STATIC ${UASYNC_SOURCES})