diff --git a/library/RSL_Emulation.ttcn b/library/RSL_Emulation.ttcn
index eeb5ed56c..9a0741705 100644
--- a/library/RSL_Emulation.ttcn
+++ b/library/RSL_Emulation.ttcn
@@ -183,7 +183,7 @@ runs on RSL_Emulation_CT return integer {
 			return i;
 		}
 	}
-	log("No Dchan handler for ", comp_ref);
+	log("No Dchan handler for comp_ref=", comp_ref);
 	return -1;
 }
 
@@ -196,7 +196,7 @@ runs on RSL_Emulation_CT return integer {
 			return i;
 		}
 	}
-	log("No Dchan handler for ", trx_nr, chan_nr);
+	log("No Dchan handler for trx_nr=", trx_nr, " and chan_nr=", chan_nr);
 	return -1;
 }
 
@@ -209,7 +209,7 @@ runs on RSL_Emulation_CT return integer {
 			return i;
 		}
 	}
-	log("No Dchan handler for ", ra, fn);
+	log("No Dchan handler for ra=", ra, " and fn=", fn);
 	return -1;
 }
 
@@ -226,7 +226,7 @@ runs on RSL_Emulation_CT return integer {
 			}
 		}
 	}
-	log("No Dchan handler for ", ra, fn);
+	log("No Dchan handler for ra=", ra, " and fn=", fn);
 	return -1;
 }