diff --git a/ChangeLog b/ChangeLog
index 64029f949..d169b3149 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,6 +10,7 @@ Features
    token..
  + Includes utility 'calc' for quick command line calculations using the new
    expression evaluator.
+ + Deprecated '_query' alias.
  + Removed deprecated 'push', 'pull' and 'merge' commands.
 
 Bugs
diff --git a/NEWS b/NEWS
index a2e310ba9..a15d20a22 100644
--- a/NEWS
+++ b/NEWS
@@ -14,7 +14,7 @@ New configuration options in taskwarrior 2.4.0
 
 Newly deprecated features in taskwarrior 2.4.0
 
-  -
+  - The alias '_query' is deprecated.
 
 Known Issues
 
diff --git a/src/Config.cpp b/src/Config.cpp
index df2d9eaa7..2391df4b8 100644
--- a/src/Config.cpp
+++ b/src/Config.cpp
@@ -307,7 +307,7 @@ std::string Config::_defaults =
   "alias.rm=delete                                # Alias for the delete command\n"
   "alias.history=history.monthly                  # Prefer monthly over annual history reports\n"
   "alias.ghistory=ghistory.monthly                # Prefer monthly graphical over annual history reports\n"
-  "alias._query=export                            # _query is now export\n"
+  "alias._query=export                            # _query is now export\n" // DEPRECATED in 2.4.0
   "alias.burndown=burndown.weekly                 # Prefer the weekly burndown chart\n"
   "alias.shell=exec tasksh                        # Alias old shell command to new shell\n"
   "\n"
diff --git a/src/legacy.cpp b/src/legacy.cpp
index da2a3ff0f..e54e28e57 100644
--- a/src/legacy.cpp
+++ b/src/legacy.cpp
@@ -153,6 +153,10 @@ std::string legacyCheckForDeprecatedVariables ()
         it->first == "annotations"       ||
         it->first == "export.ical.class")
       deprecated.push_back (it->first);
+
+    // Deprecated іn 2.4.0.
+    if (it->first == "alias._query")
+      deprecated.push_back (it->first);
   }
 
   std::stringstream out;