diff --git a/CHANGELOG.md b/CHANGELOG.md
index f10e8a87b103..99a0e4e23c9a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,8 +12,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 ### Removed
 
+## [2.3.1] - 2020-10-08
 
-## [2.3.0] - 2020-09-29
+### Fixed
+
+- Fixed bug in ExtData when using debug logger
+
+## [2.3.0] - 2020-10-02
 
 ### Added
 
diff --git a/base/MAPL_ExtDataGridCompMod.F90 b/base/MAPL_ExtDataGridCompMod.F90
index b415f2034107..0d692254e0a3 100644
--- a/base/MAPL_ExtDataGridCompMod.F90
+++ b/base/MAPL_ExtDataGridCompMod.F90
@@ -3025,7 +3025,7 @@ subroutine GetBracketTimeOnSingleFile(fdata,tSeries,cTime,bSide,UniFileClim,inte
               LExact  =  (cLimTime == tSeries(1))
               RExact  =  (cLimTime == tSeries(nsteps))
 
-              call lgr%debug('            GetBracketTimeOnSingleFile: Extrapolation flags (2) are ',LExact,RExact,LExtrap,RExtrap,'for file ', trim(fdata%get_file_name()))
+              call lgr%debug('            GetBracketTimeOnSingleFile: Extrapolation flags (2) are %L1 %L1 %L1 %L1 for file %a',LExact,RExact,LExtrap,RExtrap, trim(fdata%get_file_name()))
 
            End IF