diff --git a/lib/base/process-unix.cpp b/lib/base/process-unix.cpp
index f2a3b209f..0f7a0edaa 100644
--- a/lib/base/process-unix.cpp
+++ b/lib/base/process-unix.cpp
@@ -320,7 +320,7 @@ bool Process::DoEvents(void)
 	m_Result.Output = output;
 
 	if (m_Callback)
-		m_Callback(m_Result);
+		Utility::QueueAsyncCallback(boost::bind(m_Callback, m_Result));
 
 	return false;
 }