diff --git a/reader/flow_graph.cc b/reader/flow_graph.cc
index 95991a0c..15347036 100644
--- a/reader/flow_graph.cc
+++ b/reader/flow_graph.cc
@@ -30,8 +30,8 @@ namespace security::binexport {
 namespace {
 
 absl::optional<Architecture> GetSupportedArchitecture(const BinExport2& proto) {
-  const std::string& architecture =
-      proto.meta_information().architecture_name();
+  const std::string architecture =
+      absl::AsciiStrToLower(proto.meta_information().architecture_name());
   if (architecture == "arm") {
     return Architecture::kArm;
   }