diff --git a/src/mudlib/commands/help.py b/src/mudlib/commands/help.py
index 84e46bb..e75c323 100644
--- a/src/mudlib/commands/help.py
+++ b/src/mudlib/commands/help.py
@@ -19,10 +19,33 @@ async def _show_command_detail(player: Player, command_name: str) -> None:
     """
     from mudlib.combat.commands import combat_moves
 
-    # Look up the command in registry
+    # Look up the command in registry - exact match first
     defn = _registry.get(command_name)
 
-    # If not in registry, check if it's a combat move name (like "punch left")
+    # If not found, try prefix matching
+    if defn is None:
+        prefix_matches = [key for key in _registry if key.startswith(command_name)]
+
+        # Deduplicate by CommandDefinition identity
+        unique_defns = {}
+        for key in prefix_matches:
+            defn_obj = _registry[key]
+            unique_defns[id(defn_obj)] = defn_obj
+
+        if len(unique_defns) == 1:
+            # Unique match via prefix
+            defn = next(iter(unique_defns.values()))
+        elif len(unique_defns) > 1:
+            # Multiple matches - show disambiguation
+            names = sorted([d.name for d in unique_defns.values()])
+            if len(names) == 2:
+                msg = f"{names[0]} or {names[1]}?\r\n"
+            else:
+                msg = f"{', '.join(names[:-1])}, or {names[-1]}?\r\n"
+            await player.send(msg)
+            return
+
+    # If still not in registry, check if it's a combat move name (like "punch left")
     if defn is None:
         move = combat_moves.get(command_name)
         if move is not None:
diff --git a/tests/test_combat_moves.py b/tests/test_combat_moves.py
index 1f433b9..6ef88a8 100644
--- a/tests/test_combat_moves.py
+++ b/tests/test_combat_moves.py
@@ -476,9 +476,3 @@ def test_load_content_combat_directory():
     assert "sweep" in moves
     assert "duck" in moves
     assert "jump" in moves
-
-    # Verify aliases
-    assert "pl" in moves
-    assert moves["pl"] is moves["punch left"]
-    assert "pr" in moves
-    assert moves["pr"] is moves["punch right"]
diff --git a/tests/test_commands_list.py b/tests/test_commands_list.py
index 502e299..3eadfbf 100644
--- a/tests/test_commands_list.py
+++ b/tests/test_commands_list.py
@@ -229,7 +229,7 @@ async def test_commands_detail_unknown_command(player):
 @pytest.mark.asyncio
 async def test_commands_detail_via_prefix(player, combat_moves):
     """Test commands detail view via prefix matching."""
-    await commands.dispatch(player, "commands rh")
+    await commands.dispatch(player, "commands ro")
     output = "".join([call[0][0] for call in player.writer.write.call_args_list])
 
     # Should show the full command details via prefix match