diff --git a/lldb/source/Commands/CommandObjectExpression.cpp b/lldb/source/Commands/CommandObjectExpression.cpp
index 927dc628695d..c47d477bc65c 100644
--- a/lldb/source/Commands/CommandObjectExpression.cpp
+++ b/lldb/source/Commands/CommandObjectExpression.cpp
@@ -55,7 +55,7 @@ CommandObjectExpression::CommandOptions::g_option_table[] =
     { LLDB_OPT_SET_1 | LLDB_OPT_SET_2, false, "all-threads",        'a', required_argument, NULL, 0, eArgTypeBoolean,    "Should we run all threads if the execution doesn't complete on one thread."},
     { LLDB_OPT_SET_1 | LLDB_OPT_SET_2, false, "ignore-breakpoints", 'i', required_argument, NULL, 0, eArgTypeBoolean,    "Ignore breakpoint hits while running expressions"},
     { LLDB_OPT_SET_1 | LLDB_OPT_SET_2, false, "timeout",            't', required_argument, NULL, 0, eArgTypeUnsignedInteger,  "Timeout value for running the expression."},
-    { LLDB_OPT_SET_1 | LLDB_OPT_SET_2, false, "unwind-on-error",    'u', required_argument, NULL, 0, eArgTypeBoolean,    "Clean up program state if the expression causes a crash, breakpoint hit or signal."},
+    { LLDB_OPT_SET_1 | LLDB_OPT_SET_2, false, "unwind-on-error",    'u', required_argument, NULL, 0, eArgTypeBoolean,    "Clean up program state if the expression causes a crash, or raises a signal.  Note, unlike gdb hitting a breakpoint is controlled by another option (-i)."},
 };