diff --git a/sstables/sstables.cc b/sstables/sstables.cc
index 97895ec4e1..09b05c3525 100644
--- a/sstables/sstables.cc
+++ b/sstables/sstables.cc
@@ -2040,7 +2040,7 @@ sstring sstable::component_basename(const sstring& ks, const sstring& cf, versio
                                     format_types format, sstring component) {
     sstring v = fmt::to_string(version);
     sstring g = to_sstring(generation);
-    sstring f = format_string.at(format);
+    sstring f = fmt::to_string(format);
     switch (version) {
     case sstable::version_types::ka:
         return ks + "-" + cf + "-" + v + "-" + g + "-" + component;
diff --git a/sstables/version.hh b/sstables/version.hh
index 7d8d7c6bf1..0f0fe4a09a 100644
--- a/sstables/version.hh
+++ b/sstables/version.hh
@@ -96,3 +96,11 @@ struct fmt::formatter<sstables::sstable_version_types> : fmt::formatter<std::str
         return fmt::format_to(ctx.out(), "{}", sstables::version_string.at(version));
     }
 };
+
+template <>
+struct fmt::formatter<sstables::sstable_format_types> : fmt::formatter<std::string_view> {
+    template <typename FormatContext>
+    auto format(const sstables::sstable_format_types& format, FormatContext& ctx) const {
+        return fmt::format_to(ctx.out(), "{}", sstables::format_string.at(format));
+    }
+};