diff --git a/AUTHORS b/AUTHORS
index 1b90942b0..0f1724efb 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -110,4 +110,5 @@ suggestions:
   Arkady Grudzinsky
   Bernhard B
   Aikido Guy
+  Gour D
 
diff --git a/ChangeLog b/ChangeLog
index 52afb3566..bb533fb32 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -187,6 +187,9 @@
    Owen Clarke).
  + Fixed bug #831, which prevented some date fields from being properly parsed.
  + Fixed bug #835, which prevented hierarchical projects from being recognized.
+ + Fixed bug #839, which caused problems when recurrence frequencies of '1m'
+   were used.  This is an obsolete form, and should now be '1mo' (thanks to
+   Gour D).
 
 # Untracked Bugs, biggest first.
  + Fixed bug that required the '%YAML' prologue in a YAML import.
diff --git a/src/Task.cpp b/src/Task.cpp
index eb1853d4e..9083ece1d 100644
--- a/src/Task.cpp
+++ b/src/Task.cpp
@@ -309,6 +309,11 @@ void Task::parse (const std::string& input)
             nl.skip (':')           &&
             nl.getQuoted ('"', value))
         {
+          // Experimental legacy value translation.
+          if (name == "recur" &&
+              value == "1m")
+            value = "1mo";
+
           (*this)[name] = decode (json::decode (value));
         }
 
diff --git a/test/bug.839.t b/test/bug.839.t
index 7a12e6c01..33a591808 100755
--- a/test/bug.839.t
+++ b/test/bug.839.t
@@ -28,7 +28,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 4;
+use Test::More tests => 5;
 
 # Create the rc file.
 if (open my $fh, '>', 'bug.rc')
@@ -46,6 +46,7 @@ if (open my $fh, '>', 'pending.data')
 }
 
 my $output = qx{../src/task rc:bug.rc list};
+like ($output, qr/One/, 'task listed');
 unlike ($output, qr/The recurrence value '1m' is not valid\./, 'recu:1m => no error');
 
 # Cleanup.