diff --git a/launcher/modplatform/ModIndex.h b/launcher/modplatform/ModIndex.h
index 4eb1fcde5..e1278ae84 100644
--- a/launcher/modplatform/ModIndex.h
+++ b/launcher/modplatform/ModIndex.h
@@ -124,7 +124,7 @@ struct IndexedVersion {
     bool is_preferred = true;
     QString changelog;
     QList<Dependency> dependencies;
-    Side side;  // this is for flame API
+    Side side = Side::NoSide;  // this is for flame API
 
     // For internal use, not provided by APIs
     bool is_currently_selected = false;
@@ -172,7 +172,7 @@ struct IndexedPack {
     QString logoName;
     QString logoUrl;
     QString websiteUrl;
-    Side side;
+    Side side = Side::NoSide;
 
     bool versionsLoaded = false;
     QList<IndexedVersion> versions;