diff --git a/src/libCom/osi/os/WIN32/dllmain.cpp b/src/libCom/osi/os/WIN32/dllmain.cpp
index d00a23766..58dd54798 100644
--- a/src/libCom/osi/os/WIN32/dllmain.cpp
+++ b/src/libCom/osi/os/WIN32/dllmain.cpp
@@ -44,7 +44,7 @@ BOOL WINAPI DllMain(HANDLE hModule, DWORD dwReason, LPVOID lpReserved)
 	case DLL_PROCESS_ATTACH:
 		if ( ! osiSockAttach() ) 
 			return FALSE;
-#		ifdef _DEBUG
+#		if defined ( _DEBUG ) && 0
 			fprintf(stderr, "Process attached to Com.dll version %s\n", EPICS_VERSION_STRING);
 #		endif
 		break;
@@ -52,7 +52,7 @@ BOOL WINAPI DllMain(HANDLE hModule, DWORD dwReason, LPVOID lpReserved)
 	case DLL_PROCESS_DETACH:
 		osiSockRelease();
         epicsThreadCleanupWIN32 ();
-#		ifdef _DEBUG
+#		if defined ( _DEBUG ) && 0
 			fprintf(stderr, "Process detached from Com.dll version %s\n", EPICS_VERSION_STRING);
 #		endif
 		break;
diff --git a/src/libCom/osi/os/WIN32/osdSock.c b/src/libCom/osi/os/WIN32/osdSock.c
index dd59ec9a3..5c44688d0 100644
--- a/src/libCom/osi/os/WIN32/osdSock.c
+++ b/src/libCom/osi/os/WIN32/osdSock.c
@@ -93,7 +93,7 @@ epicsShareFunc int epicsShareAPI osiSockAttach()
 		return FALSE;
 	}
 
-#	if _DEBUG			  
+#	if defined ( _DEBUG ) && 0	  
 		fprintf(stderr, "EPICS attached to winsock version %s\n", WsaData.szDescription);
 #	endif	
 	
@@ -110,7 +110,7 @@ epicsShareFunc void epicsShareAPI osiSockRelease()
 	if (nAttached) {
 		if (--nAttached==0u) {
 			WSACleanup();
-#			if _DEBUG			  
+#			if defined ( _DEBUG ) && 0			  
 				fprintf(stderr, "EPICS released winsock version %s\n", WsaData.szDescription);
 #			endif
 			memset (&WsaData, '\0', sizeof(WsaData));