diff --git a/src/init.cpp b/src/init.cpp
index 81701977..3eb02450 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -180,6 +180,9 @@ void initializeDataAndRules (
   if (shinyNewDatabase)
     rules.set ("temp.shiny", 1);
 
+  if (rules.has ("debug.indicator"))
+    setDebugIndicator (rules.get ("debug.indicator"));
+
   // Initialize the database (no data read), but files are enumerated.
   database.initialize (data._data);
 
diff --git a/src/log.cpp b/src/log.cpp
index 76eee189..aaac54c1 100644
--- a/src/log.cpp
+++ b/src/log.cpp
@@ -30,6 +30,7 @@
 #include <iostream>
 
 static bool debugMode = false;
+static std::string debugIndicator = ">>";
 
 ////////////////////////////////////////////////////////////////////////////////
 void enableDebugMode (bool value)
@@ -38,10 +39,16 @@ void enableDebugMode (bool value)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-void debug (const std::string& msg)
+void setDebugIndicator (const std::string& indicator)
 {
-  if (debugMode)
-    std::cout << Color ("gray4").colorize (">> " + msg) << "\n";
+  debugIndicator = indicator;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+void debug (const std::string& msg)
+{
+  if (debugMode)
+    std::cout << Color ("gray4").colorize (debugIndicator + " " + msg) << "\n";
 }
 
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/src/timew.h b/src/timew.h
index 33418395..e4aebe8f 100644
--- a/src/timew.h
+++ b/src/timew.h
@@ -74,9 +74,8 @@ bool dayIsHoliday (const Rules&, const Datetime&);
 
 // log.cpp
 void enableDebugMode (bool);
-void enableQuietMode (bool);
+void setDebugIndicator (const std::string&);
 void debug (const std::string&);
-void error (const std::string&);
 
 // utiŀ.cpp
 std::string osName ();