diff --git a/utils/LocThread.cpp b/utils/LocThread.cpp
index c1052cb0..568a6bb3 100644
--- a/utils/LocThread.cpp
+++ b/utils/LocThread.cpp
@@ -85,8 +85,8 @@ LocThreadDelegate::LocThreadDelegate(LocThread::tCreate creator,
     if (mThandle) {
         // set thread name
         char lname[16];
-        int len = (sizeof(lname)>sizeof(threadName)) ?
-          (sizeof(threadName) -1):(sizeof(lname) - 1);
+        int len = (sizeof(lname) > (strlen(threadName) + 1)) ?
+          (strlen(threadName)):(sizeof(lname) - 1);
         memcpy(lname, threadName, len);
         lname[len] = 0;
         // set the thread name here