diff --git a/lldb/source/Interpreter/CommandObject.cpp b/lldb/source/Interpreter/CommandObject.cpp
index 616d3e38acbb..e04659ccf98d 100644
--- a/lldb/source/Interpreter/CommandObject.cpp
+++ b/lldb/source/Interpreter/CommandObject.cpp
@@ -1170,7 +1170,7 @@ CommandObject::g_arguments_data[] =
     { eArgTypeGDBFormat, "gdb-format", CommandCompletions::eNoCompletion, { GDBFormatHelpTextCallback, true }, nullptr },
     { eArgTypeHelpText, "help-text", CommandCompletions::eNoCompletion, { nullptr, false }, "Text to be used as help for some other entity in LLDB" },
     { eArgTypeIndex, "index", CommandCompletions::eNoCompletion, { nullptr, false }, "An index into a list." },
-    { eArgTypeLanguage, "language", CommandCompletions::eNoCompletion, { LanguageTypeHelpTextCallback, true }, nullptr },
+    { eArgTypeLanguage, "source-language", CommandCompletions::eNoCompletion, { LanguageTypeHelpTextCallback, true }, nullptr },
     { eArgTypeLineNum, "linenum", CommandCompletions::eNoCompletion, { nullptr, false }, "Line number in a source file." },
     { eArgTypeLogCategory, "log-category", CommandCompletions::eNoCompletion, { nullptr, false }, "The name of a category within a log channel, e.g. all (try \"log list\" to see a list of all channels and their categories." },
     { eArgTypeLogChannel, "log-channel", CommandCompletions::eNoCompletion, { nullptr, false }, "The name of a log channel, e.g. process.gdb-remote (try \"log list\" to see a list of all channels and their categories)." },