diff --git a/src/internal/mana_analysis.h b/src/internal/mana_analysis.h
index e2a2a09..4f216e6 100644
--- a/src/internal/mana_analysis.h
+++ b/src/internal/mana_analysis.h
@@ -75,7 +75,7 @@ auto_match_modules(const mvlc::CrateConfig &crateConfig, const nlohmann::json &m
                     jModule["name"] = fmt::format("{}.{}", event.getName(), module_.name);
                     for (auto &jSource: jModule["data_sources"])
                         jSource["name"] =
-                            fmt::format("{}.{}.{}", event.getName(), module_.name, jSource["name"]);
+                            fmt::format("{}.{}.{}", event.getName(), module_.name, jSource["name"].get<std::string>());
                     break;
                 }
             }
@@ -310,7 +310,7 @@ struct ManaCountingSink: public IManaSink
             spdlog::info("event[{}]: {} hits", ei, eventCounts[ei]);
             for (size_t ai = 0; ai < eventArrayIndexHits[ei].size(); ++ai)
             {
-                auto name = jRun["events"][ei]["outputs"][ai]["name"];
+                auto name = jRun["events"][ei]["outputs"][ai]["name"].get<std::string>();
                 auto arrayHits = eventArrayIndexHits[ei][ai];
                 auto sumHits = std::accumulate(std::begin(arrayHits), std::end(arrayHits),
                                                static_cast<size_t>(0u));