diff --git a/IOB-WIN-FTP/Iob/Ftp.cs b/IOB-WIN-FTP/Iob/Ftp.cs
index 3eefec1b..69357b23 100644
--- a/IOB-WIN-FTP/Iob/Ftp.cs
+++ b/IOB-WIN-FTP/Iob/Ftp.cs
@@ -947,12 +947,12 @@ namespace IOB_WIN_FTP.Iob
         private bool pingStatusOk()
         {
             bool answ = false;
-            int numVal = PingQueue.Count;
+            long numVal = PingQueue.Count;
             if (numVal > maxQueuePing / 2)
             {
                 var listaValori = PingQueue.ToList();
-                int numOk = listaValori.Where(x => x == "1").Count();
-                int numKo = numVal - numOk;
+                long numOk = listaValori.Where(x => x == "1").Count();
+                long numKo = numVal - numOk;
                 answ = numOk >= numKo;
                 lgTrace($"PING ok per: {numOk} > {numKo}");
             }
diff --git a/IOB-WIN-SHELLY/Iob/ShellyClient.cs b/IOB-WIN-SHELLY/Iob/ShellyClient.cs
index d5df8780..3e459062 100644
--- a/IOB-WIN-SHELLY/Iob/ShellyClient.cs
+++ b/IOB-WIN-SHELLY/Iob/ShellyClient.cs
@@ -287,12 +287,12 @@ namespace IOB_WIN_SHELLY.Iob
         private bool pingStatusOk()
         {
             bool answ = false;
-            int numVal = PingQueue.Count;
+            long numVal = PingQueue.Count;
             if (numVal > maxQueuePing / 2)
             {
                 var listaValori = PingQueue.ToList();
-                int numOk = listaValori.Where(x => x == "1").Count();
-                int numKo = numVal - numOk;
+                long numOk = listaValori.Where(x => x == "1").Count();
+                long numKo = numVal - numOk;
                 answ = numOk >= numKo;
                 lgTrace($"PING ok per: {numOk} > {numKo}");
             }