diff --git a/ChangeLog b/ChangeLog
index 7d05412eb..fdd4d643e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -7,6 +7,8 @@
   + "task stop" can now remove the start time from a started task.
   + "task ghistory" now displays a differently aligned graph, allowing
     easier comparison by month of tasks added versus completed and deleted.
+  + "task version" command now reports unrecognized configuration variables,
+    which may be spelling mistakes or deprecated variables.
 
 ------ old releases ------------------------------
 
diff --git a/html/config.html b/html/config.html
index 30db4d940..09add7bef 100644
--- a/html/config.html
+++ b/html/config.html
@@ -316,6 +316,16 @@ ID Project Pri Description
                   whenever the shadow file is updated by some task command.
                 </dd>
 
+                <p>
+                  Note that the command:
+                </p>
+
+                <pre><code>task version</code></pre>
+
+                <p>
+                  will display the configuration variables found in the .taskrc file,
+                  and will warn you of any variables that are not recognized.
+                </p>
               </div>
 
               <br />
diff --git a/html/task.html b/html/task.html
index c93cbb5be..cd398f0a3 100644
--- a/html/task.html
+++ b/html/task.html
@@ -100,6 +100,8 @@
                   <li>"task stop" can remove the start time from a started task.
                   <li>"task ghistory" now displays a differently aligned graph, allowing
                       easier comparison by month of tasks added versus completed and deleted.
+                  <li>"task version" command now reports unrecognized configuration variables,
+                      which may be spelling mistakes or deprecated variables.
                 </ul>
 
                 <p>
diff --git a/src/command.cpp b/src/command.cpp
index a404dc399..3030d695c 100644
--- a/src/command.cpp
+++ b/src/command.cpp
@@ -355,6 +355,42 @@ std::string handleVersion (Config& conf)
       << link.render ()
       << std::endl;
 
+  // Complain about configuration variables that are not recognized.
+  // These are the regular configuration variables.
+  std::string recognized =
+    "blanklines color color.active color.due color.overdue color.pri.H "
+    "color.pri.L color.pri.M color.pri.none color.tagged confirmation curses "
+    "data.location dateformat default.command default.priority defaultwidth due "
+    "monthsperline nag newest next oldest project shadow.command shadow.file "
+    "shadow.notify";
+
+  std::vector <std::string> unrecognized;
+  foreach (i, all)
+  {
+     if (recognized.find (*i) == std::string::npos)
+     {
+       // These are special configuration variables, because their name is
+       // dynamic.
+       if (i->find ("color.keyword.") == std::string::npos &&
+           i->find ("color.project.") == std::string::npos &&
+           i->find ("color.tag.")     == std::string::npos)
+       {
+         unrecognized.push_back (*i);
+       }
+     }
+  }
+
+  if (unrecognized.size ())
+  {
+    out << "Your .taskrc file contains these unrecognized variables:"
+        << std::endl;
+
+    foreach (i, unrecognized)
+      out << "  " << *i << std::endl;
+
+    out << std::endl;
+  }
+
   // Verify installation.  This is mentioned in the documentation as the way to
   // ensure everything is properly installed.