diff --git a/src/jrd/UserManagement.cpp b/src/jrd/UserManagement.cpp
index b621ff9392..0d74b72254 100644
--- a/src/jrd/UserManagement.cpp
+++ b/src/jrd/UserManagement.cpp
@@ -34,6 +34,7 @@ using namespace Firebird;
 
 
 UserManagement::UserManagement(thread_db* tdbb)
+	: database(0), transaction(0)
 {
 	char securityDatabaseName[MAXPATHLEN];
 	SecurityDatabase::getPath(securityDatabaseName);