diff --git a/SQL Query.sql b/SQL Query.sql
index c72e90c819d802ca155e9f33e051bbdeed0441b9..644d1a5f6d7bb41173c6ec91dded2908f69f0dca 100644
--- a/SQL Query.sql	
+++ b/SQL Query.sql	
@@ -16,7 +16,7 @@
   GROUP BY StyleColor
 
   /* Liczba sygnalow dla kazdego pomiaru */
-   SELECT MEASUREMENT, count(ITEMID)
+   SELECT MEASUREMENT, count(distinct(ITEMID))
    FROM rfid.Logs
    JOIN rfid.EanEpc ON rfid.Logs.EPC = rfid.EanEpc.EPC
    JOIN dw.Item ON rfid.EanEpc.EAN = dw.Item.EAN