summaryrefslogtreecommitdiff
path: root/lib/debug.rb
diff options
context:
space:
mode:
Diffstat (limited to 'lib/debug.rb')
-rw-r--r--lib/debug.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/debug.rb b/lib/debug.rb
index 5d754d8ebb..394a53e172 100644
--- a/lib/debug.rb
+++ b/lib/debug.rb
@@ -182,7 +182,7 @@ SCRIPT_LINES__ = {} unless defined? SCRIPT_LINES__ # :nodoc:
# Debug is not available in safe mode.
class DEBUGGER__
- MUTEX = Mutex.new # :nodoc:
+ MUTEX = Thread::Mutex.new # :nodoc:
class Context # :nodoc:
DEBUG_LAST_CMD = []