diff --git a/src/Navaids/navdb.cxx b/src/Navaids/navdb.cxx
index e6979ee96..2434171e3 100644
--- a/src/Navaids/navdb.cxx
+++ b/src/Navaids/navdb.cxx
@@ -66,7 +66,7 @@ static FGNavRecord* createNavFromStream(std::istream& aStream)
 {
   int rawType;
   aStream >> rawType;
-  if (aStream.eof()) {
+  if (aStream.eof() || (rawType == 99)) {
     return NULL; // happens with, eg, carrier_nav.dat
   }