diff --git a/launcher/ui/pages/modplatform/flame/FlameModel.cpp b/launcher/ui/pages/modplatform/flame/FlameModel.cpp
index 56c655302..cf2bbd890 100644
--- a/launcher/ui/pages/modplatform/flame/FlameModel.cpp
+++ b/launcher/ui/pages/modplatform/flame/FlameModel.cpp
@@ -165,7 +165,10 @@ void ListModel::fetchMore(const QModelIndex& parent)
 void ListModel::performPaginatedSearch()
 {
     static const FlameAPI api;
-    if (m_currentSearchTerm.startsWith("#")) {
+
+    // activate search by id only for numerical values because all CurseForge ids are numerical
+    static const QRegularExpression s_projectIdExpr("^\\#[0-9]+$");
+    if (s_projectIdExpr.match(m_currentSearchTerm).hasMatch()) {
         auto projectId = m_currentSearchTerm.mid(1);
         if (!projectId.isEmpty()) {
             ResourceAPI::Callback<ModPlatform::IndexedPack::Ptr> callbacks;
diff --git a/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp b/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp
index 9c1af44c0..5cc515536 100644
--- a/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp
+++ b/launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp
@@ -135,6 +135,7 @@ void ModpackListModel::performPaginatedSearch()
         return;
     static const ModrinthAPI api;
 
+    // Modrinth ids are not limited to numbers and can be any length
     if (m_currentSearchTerm.startsWith("#")) {
         auto projectId = m_currentSearchTerm.mid(1);
         if (!projectId.isEmpty()) {