diff --git a/src/commands/CmdLog.cpp b/src/commands/CmdLog.cpp
index bbd5dcfac..7ce7c8665 100644
--- a/src/commands/CmdLog.cpp
+++ b/src/commands/CmdLog.cpp
@@ -68,10 +68,10 @@ int CmdLog::execute (std::string& output)
 
   // Recurring tasks get a special status.
   if (task.has ("recur"))
-    throw std::string ("You cannot log recurring tasks.");
+    throw std::string (STRING_CMD_LOG_NO_RECUR);
 
   if (task.has ("wait"))
-    throw std::string ("You cannot log waiting tasks.");
+    throw std::string (STRING_CMD_LOG_NO_WAITING);
 
   // Override with log-specific changes.
   task.setStatus (Task::completed);
@@ -91,7 +91,7 @@ int CmdLog::execute (std::string& output)
   context.tdb.unlock ();
 
   if (context.config.getBoolean ("echo.command"))
-    output = "Logged task.\n";
+    output = std::string (STRING_CMD_LOG_LOGGED) + "\n";
 
   return rc;
 }
diff --git a/src/en-US.h b/src/en-US.h
index e30ba629e..5680f2f4c 100644
--- a/src/en-US.h
+++ b/src/en-US.h
@@ -176,6 +176,9 @@
 #define STRING_CMD_ADD_BAD_ATTRIBUTE "Unrecognized attribute '{1}'."
 #define STRING_CMD_MOD_UNEXPECTED    "Unexpected argument '{1}' found while modifying a task."
 #define STRING_CMD_LOG_USAGE         "Adds a new task that is already completed."
+#define STRING_CMD_LOG_NO_RECUR      "You cannot log recurring tasks."
+#define STRING_CMD_LOG_NO_WAITING    "You cannot log waiting tasks."
+#define STRING_CMD_LOG_LOGGED        "Logged task."
 #define STRING_CMD_IDS_USAGE_RANGE   "Shows only the IDs of matching tasks, in the form of a range."
 #define STRING_CMD_IDS_USAGE_LIST    "Shows only the IDs of matching tasks, in the form of a list."
 #define STRING_CMD_IDS_USAGE_ZSH     "Shows the IDs and descriptions of matching tasks."