diff --git a/lldb/source/Interpreter/CommandObjectRegexCommand.cpp b/lldb/source/Interpreter/CommandObjectRegexCommand.cpp
index efc7c33..bde7f58 100644
--- a/lldb/source/Interpreter/CommandObjectRegexCommand.cpp
+++ b/lldb/source/Interpreter/CommandObjectRegexCommand.cpp
@@ -111,7 +111,7 @@
 {
     m_entries.resize(m_entries.size() + 1);
     // Only add the regular expression if it compiles
-    if (m_entries.back().regex.Compile (re_cstr, REG_EXTENDED))
+    if (m_entries.back().regex.Compile (re_cstr))
     {
         m_entries.back().command.assign (command_cstr);
         return true;