diff --git a/source/src/services.cpp b/source/src/services.cpp
index f63f86e..1b66f57 100644
--- a/source/src/services.cpp
+++ b/source/src/services.cpp
@@ -143,7 +143,10 @@ namespace dropshell
                 error << "Variable TEMPLATE_HASH not found in the service " << filenames::template_info_env << " for "<<server_name << " - "<< service.template_name << std::endl;
             else if (tinfo.is_set())
             {
-                uint64_t service_template_hash = std::stoull(it->second);
+                std::string template_hash_str = it->second;
+                uint64_t service_template_hash = 0;
+                if (!template_hash_str.empty())
+                    service_template_hash = std::stoull(template_hash_str);
                 service.service_template_hash_match = (service_template_hash == tinfo.hash());
                 //debug << "Service template hash: " << service_template_hash << " == " << tinfo.hash() << std::endl;
             }