diff --git a/lldb/source/Interpreter/CommandObject.cpp b/lldb/source/Interpreter/CommandObject.cpp
index eb84378..e2db8db 100644
--- a/lldb/source/Interpreter/CommandObject.cpp
+++ b/lldb/source/Interpreter/CommandObject.cpp
@@ -622,7 +622,8 @@
     { eArgTypeFunctionName, "function-name", CommandCompletions::eNoCompletion, NULL, "The name of a function." },
     { eArgTypeIndex, "index", CommandCompletions::eNoCompletion, NULL, "An index into a list." },
     { eArgTypeLineNum, "linenum", CommandCompletions::eNoCompletion, NULL, "Line number in a source file." },
-    { eArgTypeLogChannel, "log-channel", CommandCompletions::eNoCompletion, NULL, "Help text goes here." },
+    { eArgTypeLogCategory, "log-category", CommandCompletions::eNoCompletion, NULL, "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, NULL, "The name of a log channel, e.g. process.gdb-remote (try \"log list\" to see a list of all channels and their categories)." },
     { eArgTypeMethod, "method", CommandCompletions::eNoCompletion, NULL, "A C++ method name." },
     { eArgTypeName, "name", CommandCompletions::eNoCompletion, NULL, "Help text goes here." },
     { eArgTypeNewPathPrefix, "new-path-prefix", CommandCompletions::eNoCompletion, NULL, "Help text goes here." },