diff --git a/NumericalData/AMDA/MESSENGER/FIPS/mess-fips-espec.xml b/NumericalData/AMDA/MESSENGER/FIPS/mess-fips-espec.xml
index 37a84e1..494a91a 100644
--- a/NumericalData/AMDA/MESSENGER/FIPS/mess-fips-espec.xml
+++ b/NumericalData/AMDA/MESSENGER/FIPS/mess-fips-espec.xml
@@ -34,7 +34,8 @@
                 <StartDate>2008-08-20T16:03:35Z</StartDate>
                 <StopDate>2015-04-30T15:08:18Z</StopDate>
             </TimeSpan>
-            <Cadence>PT60S</Cadence>
+            <Cadence_Min>PT7S</Cadence_Min> 
+            <Cadence_Max>PT67S</Cadence_Max>
         </TemporalDescription>
         <ObservedRegion>Mercury</ObservedRegion>
         <Caveats>Quality flag :
diff --git a/NumericalData/AMDA/MESSENGER/FIPS/mess-fips-ntp.xml b/NumericalData/AMDA/MESSENGER/FIPS/mess-fips-ntp.xml
index 9e9c772..16933c8 100644
--- a/NumericalData/AMDA/MESSENGER/FIPS/mess-fips-ntp.xml
+++ b/NumericalData/AMDA/MESSENGER/FIPS/mess-fips-ntp.xml
@@ -43,8 +43,7 @@ In this version of the dataset, many of these products are provided
                 <StartDate>2008-08-20T16:03:35Z</StartDate>
                 <StopDate>2015-04-30T15:08:18Z</StopDate>
             </TimeSpan>
-            <Cadence_Min>PT7S</Cadence_Min> 
-            <Cadence_Max>PT67S</Cadence_Max>
+            <Cadence>PT60S</Cadence>
         </TemporalDescription>
         <ObservedRegion>Mercury</ObservedRegion>
         <Caveats>
--
libgit2 0.21.2