diff --git a/reactos/lib/sdk/crt/oldnames.cmake b/reactos/lib/sdk/crt/oldnames.cmake
index 53de4eb91d4..8e2c2eb00c8 100644
--- a/reactos/lib/sdk/crt/oldnames.cmake
+++ b/reactos/lib/sdk/crt/oldnames.cmake
@@ -1,11 +1,7 @@
 if(NOT MSVC)
-    add_custom_command(
-        OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/liboldnames.a
-        COMMAND ${CMAKE_DLLTOOL} --def ${CMAKE_CURRENT_SOURCE_DIR}/moldname-msvcrt.def --kill-at --output-lib ${CMAKE_CURRENT_BINARY_DIR}/liboldnames.a)
-
-    set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/liboldnames.a PROPERTIES GENERATED TRUE)
-
-    add_custom_target(oldnames ALL DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/liboldnames.a)
+    _add_library(oldnames STATIC EXCLUDE_FROM_ALL ${CMAKE_CURRENT_SOURCE_DIR}/moldname-msvcrt.def)
+    set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/moldname-msvcrt.def PROPERTIES EXTERNAL_OBJECT TRUE)
+    set_target_properties(oldnames PROPERTIES LINKER_LANGUAGE "IMPLIB" PREFIX "")
 else()
     add_library(oldnames oldnames-msvcrt.S)
 endif()