diff --git a/src/gn/desc_builder.cc b/src/gn/desc_builder.cc
index 57b253d..8e84d38 100644
--- a/src/gn/desc_builder.cc
+++ b/src/gn/desc_builder.cc
@@ -463,6 +463,7 @@
       CONFIG_VALUE_ARRAY_HANDLER(cflags_cc, std::string)
       CONFIG_VALUE_ARRAY_HANDLER(cflags_objc, std::string)
       CONFIG_VALUE_ARRAY_HANDLER(cflags_objcc, std::string)
+      CONFIG_VALUE_ARRAY_HANDLER(rustflags, std::string)
       CONFIG_VALUE_ARRAY_HANDLER(defines, std::string)
       CONFIG_VALUE_ARRAY_HANDLER(include_dirs, SourceDir)
       CONFIG_VALUE_ARRAY_HANDLER(inputs, SourceFile)