diff --git a/programs/services/rpc.c b/programs/services/rpc.c
index dd44965142c..0b194cf2dcb 100644
--- a/programs/services/rpc.c
+++ b/programs/services/rpc.c
@@ -114,7 +114,7 @@ static void run_after_timeout(void (*func)(struct service_entry*), struct servic
         return;
     }
 
-    service->ref_count++;
+    InterlockedIncrement(&service->ref_count);
     elem->func = func;
     elem->service_entry = service;
 
diff --git a/programs/services/services.c b/programs/services/services.c
index 53a38464b91..8489f17f8a5 100644
--- a/programs/services/services.c
+++ b/programs/services/services.c
@@ -299,7 +299,7 @@ static void scmdatabase_autostart_services(struct scmdatabase *db)
                 services_list = slist_new;
             }
             services_list[i] = service;
-            service->ref_count++;
+            InterlockedIncrement(&service->ref_count);
             i++;
         }
     }