2 files changed, 5 insertions, 0 deletions
diff --git a/plugins/Msg_Export/src/stdafx.h b/plugins/Msg_Export/src/stdafx.h
index 14147793e0..b2be179c48 100755
--- a/plugins/Msg_Export/src/stdafx.h
+++ b/plugins/Msg_Export/src/stdafx.h
@@ -33,6 +33,7 @@ using namespace std;
 #include <m_clist.h>
 #include <m_contacts.h>
 #include <m_langpack.h>
+#include <m_netlib.h>
 #include <m_options.h>
 #include <m_history.h>
 #include <m_userinfo.h>
diff --git a/plugins/Msg_Export/src/utils.cpp b/plugins/Msg_Export/src/utils.cpp
index 27b12dd673..ddafc4b599 100755
--- a/plugins/Msg_Export/src/utils.cpp
+++ b/plugins/Msg_Export/src/utils.cpp
@@ -716,6 +716,10 @@ static bool ExportDBEventInfo(MCONTACT hContact, HANDLE hFile, wstring sFilePath
 		}
 		else {
 			const char *szProto = GetContactProto(hContact);
+			if (szProto == nullptr) {
+				Netlib_Logf(0, MODULENAME ": cannot write message for a contact %d without protocol", hContact);
+				return false;
+			}
 
 			if (g_bUseJson) {
 				JSONNode pRoot, pInfo, pHist(JSON_ARRAY);