diff --git a/NumericalData/AMDA/Cluster/Cluster2/EFW/clust2-efw-ppp.xml b/NumericalData/AMDA/Cluster/Cluster2/EFW/clust2-efw-ppp.xml
index 30ffe7a..b37cc9e 100644
--- a/NumericalData/AMDA/Cluster/Cluster2/EFW/clust2-efw-ppp.xml
+++ b/NumericalData/AMDA/Cluster/Cluster2/EFW/clust2-efw-ppp.xml
@@ -139,7 +139,7 @@
         </Parameter>
         <Parameter>
             <Name>Potential</Name>
-            <ParameterKey>C2_pot</ParameterKey>
+            <ParameterKey>c2_pot</ParameterKey>
             <Ucd>phys.potential;phys.elecField;instr.obsty</Ucd>
             <Units>V</Units>
             <RenderingHints>
diff --git a/NumericalData/AMDA/Cluster/Cluster3/EFW/clust3-efw-ppp.xml b/NumericalData/AMDA/Cluster/Cluster3/EFW/clust3-efw-ppp.xml
index 80d608f..5dab5d5 100644
--- a/NumericalData/AMDA/Cluster/Cluster3/EFW/clust3-efw-ppp.xml
+++ b/NumericalData/AMDA/Cluster/Cluster3/EFW/clust3-efw-ppp.xml
@@ -140,7 +140,7 @@
         </Parameter>
         <Parameter>
             <Name>Potential</Name>
-            <ParameterKey>C3_pot</ParameterKey>
+            <ParameterKey>c3_pot</ParameterKey>
             <Ucd>phys.potential;phys.elecField;instr.obsty</Ucd>
             <Units>V</Units>
             <RenderingHints>
diff --git a/NumericalData/AMDA/Cluster/Cluster4/EFW/clust4-efw-ppp.xml b/NumericalData/AMDA/Cluster/Cluster4/EFW/clust4-efw-ppp.xml
index 2a57131..ee3ebe8 100644
--- a/NumericalData/AMDA/Cluster/Cluster4/EFW/clust4-efw-ppp.xml
+++ b/NumericalData/AMDA/Cluster/Cluster4/EFW/clust4-efw-ppp.xml
@@ -140,7 +140,7 @@
         </Parameter>
         <Parameter>
             <Name>Potential</Name>
-            <ParameterKey>C4_pot</ParameterKey>
+            <ParameterKey>c4_pot</ParameterKey>
             <Ucd>phys.potential;phys.elecField;instr.obsty</Ucd>
             <Units>V</Units>
             <RenderingHints>
--
libgit2 0.21.2