diff --git a/ptrace/debugger/process.py b/ptrace/debugger/process.py
index db4573d..e86509a 100644
--- a/ptrace/debugger/process.py
+++ b/ptrace/debugger/process.py
@@ -180,7 +180,7 @@ def isTraced(self):
         if not HAS_PROC:
             self.notImplementedError()
         stat = readProcessStat(self.pid)
-        return (stat.state == 'T')
+        return stat.state == 't'
 
     def attach(self):
         if self.is_attached: