diff --git a/include/boost/thread/pthread/condition_variable.hpp b/include/boost/thread/pthread/condition_variable.hpp
index 754f0ac3..52c156bc 100644
--- a/include/boost/thread/pthread/condition_variable.hpp
+++ b/include/boost/thread/pthread/condition_variable.hpp
@@ -143,7 +143,7 @@ namespace boost
             while (!pred())
             {
                 if(!timed_wait(m, wait_until))
-                    return false;
+                    return pred();
             }
             return true;
         }
diff --git a/include/boost/thread/pthread/condition_variable_fwd.hpp b/include/boost/thread/pthread/condition_variable_fwd.hpp
index ca45e54b..1d1fbdf4 100644
--- a/include/boost/thread/pthread/condition_variable_fwd.hpp
+++ b/include/boost/thread/pthread/condition_variable_fwd.hpp
@@ -41,7 +41,7 @@ namespace boost
             while (!pred())
             {
                 if(!timed_wait(m, wait_until))
-                    return false;
+                    return pred();
             }
             return true;
         }
diff --git a/include/boost/thread/win32/condition_variable.hpp b/include/boost/thread/win32/condition_variable.hpp
index ccf29b22..beebcf62 100644
--- a/include/boost/thread/win32/condition_variable.hpp
+++ b/include/boost/thread/win32/condition_variable.hpp
@@ -186,7 +186,7 @@ namespace boost
                 while (!pred())
                 {
                     if(!do_wait(m, wait_until))
-                        return false;
+                        return pred();
                 }
                 return true;
             }