diff --git a/src/libCom/osi/os/default/osdMessageQueue.cpp b/src/libCom/osi/os/default/osdMessageQueue.cpp
index 55653b1f8..69b08c020 100644
--- a/src/libCom/osi/os/default/osdMessageQueue.cpp
+++ b/src/libCom/osi/os/default/osdMessageQueue.cpp
@@ -22,7 +22,7 @@
 #include <epicsEvent.h>
 #include <epicsMutex.h>
 #include <stdexcept>
-# include <string.h>
+#include <string.h>
 
 /*
  * Event cache