diff --git a/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp b/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp
index 9acabb11f..15c7a0eee 100644
--- a/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp
+++ b/slsDetectorSoftware/multiSlsDetector/multiSlsDetector.cpp
@@ -3702,13 +3702,15 @@ string multiSlsDetector::getNetworkParameter(networkParameter p) {
 	setErrorMask(getErrorMask()|(1<<idet));
 
       if (s0=="")
-	s0=s;
+	s0=s+string("+");
       else
-	s0+=string("+")+s;
+	s0+=s+string("+");
+
       if (s1=="")
 	s1=s;
       else if (s1!=s)
 	s1="bad";
+
     }
   }
   if (s1=="bad")