diff --git a/src/Context.cpp b/src/Context.cpp
index 140b04657..f01dffb92 100644
--- a/src/Context.cpp
+++ b/src/Context.cpp
@@ -622,8 +622,9 @@ void Context::getLimits (int& rows, int& lines)
 // easier, it has been decoupled from Context.
 void Context::staticInitialization ()
 {
-  CLI2::minimumMatchLength  = config.getInteger ("abbreviation.minimum");
-  Lexer::minimumMatchLength = config.getInteger ("abbreviation.minimum");
+  CLI2::minimumMatchLength     = config.getInteger ("abbreviation.minimum");
+  Lexer::minimumMatchLength    = config.getInteger ("abbreviation.minimum");
+  ISO8601d::minimumMatchLength = config.getInteger ("abbreviation.minimum");
 
   Task::defaultProject      = config.get ("default.project");
   Task::defaultDue          = config.get ("default.due");
diff --git a/src/ISO8601.cpp b/src/ISO8601.cpp
index 998dee123..0179b2789 100644
--- a/src/ISO8601.cpp
+++ b/src/ISO8601.cpp
@@ -106,7 +106,8 @@ static struct
 
 #define NUM_DURATIONS (sizeof (durations) / sizeof (durations[0]))
 
-std::string ISO8601d::weekstart = STRING_DATE_SUNDAY;
+std::string ISO8601d::weekstart  = STRING_DATE_SUNDAY;
+int ISO8601d::minimumMatchLength = 3;
 
 ////////////////////////////////////////////////////////////////////////////////
 ISO8601d::ISO8601d ()
diff --git a/src/ISO8601.h b/src/ISO8601.h
index 690bfc16c..80aeabc8f 100644
--- a/src/ISO8601.h
+++ b/src/ISO8601.h
@@ -35,6 +35,7 @@ class ISO8601d
 {
 public:
   static std::string weekstart;
+  static int minimumMatchLength;
 
   ISO8601d ();
   ~ISO8601d ();