diff --git a/ModelicaTest/Resources/Reference/ModelicaTest/Fluid/TestComponents/Sensors/TestTemperature1/comparisonSignals.txt b/ModelicaTest/Resources/Reference/ModelicaTest/Fluid/TestComponents/Sensors/TestTemperature1/comparisonSignals.txt
index 09fe40c3e1..5e1f80b046 100644
--- a/ModelicaTest/Resources/Reference/ModelicaTest/Fluid/TestComponents/Sensors/TestTemperature1/comparisonSignals.txt
+++ b/ModelicaTest/Resources/Reference/ModelicaTest/Fluid/TestComponents/Sensors/TestTemperature1/comparisonSignals.txt
@@ -2,7 +2,5 @@ time
 Tmix1.T
 Tmix2.T
 Tdiff
-volume1_1.medium.h
-volume1_2.medium.h
-volume2_1.medium.h
-volume2_2.medium.h
+volume1.medium.h
+volume2.medium.h