diff --git a/fhem/CHANGED b/fhem/CHANGED
index 3bb3265e7..064172372 100644
--- a/fhem/CHANGED
+++ b/fhem/CHANGED
@@ -1,5 +1,6 @@
 # Add changes at the top of the list. Keep it in ASCII, and 80-char wide.
 # Do not insert empty lines here, update check depends on it.
+  - bugfix:  93__DbRep: error in diffValue  if no value was selected
   - feature  93_DbRep: exportToFile to CSV-format, Reading "errortext" added
   - feature: 73_GasCalculator:         System readings are hidden now
   - feature: 73_ElectricityCalculator: System readings are hidden now
diff --git a/fhem/FHEM/93_DbRep.pm b/fhem/FHEM/93_DbRep.pm
index ac763afb6..962f35fff 100644
--- a/fhem/FHEM/93_DbRep.pm
+++ b/fhem/FHEM/93_DbRep.pm
@@ -37,6 +37,7 @@
 ###########################################################################################################
 #  Versions History:
 #
+# 3.7.2        04.09.2016       problem in diffValue fixed if if no value was selected
 # 3.7.1        31.08.2016       Reading "errortext" added, commandref continued, exportToFile changed,
 #                               diffValue changed to fix wrong timestamp if error occur
 # 3.7          30.08.2016       exportToFile added
@@ -1383,7 +1384,7 @@ sub diffval_ParseDone($) {
       my $runtime_string = decode_base64($a[0]);
       $lastruntimestring = $runtime_string if ($i == 1);
       
-      my $value          = $a[3];  
+      my $value          = $a[3]?$a[3]:0;  
       
       $a[3]              =~ s/:/-/g if($a[2]);          # substituieren unsopported characters -> siehe fhem.pl
       my $timestamp      = $a[2]?$a[1]."_".$a[2]:$a[1];