diff --git a/localization/CMakeLists.txt b/localization/CMakeLists.txt
index 8f0d3f6b9c29a..764b378f97b44 100644
--- a/localization/CMakeLists.txt
+++ b/localization/CMakeLists.txt
@@ -4,7 +4,7 @@ add_custom_command(TARGET diagnostic-database
   COMMAND
     ${CMAKE_COMMAND} -E copy_directory ${CMAKE_CURRENT_SOURCE_DIR}/diagnostics/ ${CMAKE_BINARY_DIR}/share/swift/diagnostics/
   COMMAND
-    swift-serialize-diagnostics
+    $<TARGET_FILE:swift-serialize-diagnostics>
       --input-file-path ${CMAKE_BINARY_DIR}/share/swift/diagnostics/en.yaml
       --output-directory ${CMAKE_BINARY_DIR}/share/swift/diagnostics/
 )