diff --git a/code/SIBImporter.cpp b/code/SIBImporter.cpp
index 3fa66bd77..4ae2ab7d4 100644
--- a/code/SIBImporter.cpp
+++ b/code/SIBImporter.cpp
@@ -827,7 +827,7 @@ static void ReadInstance(SIB* sib, StreamReaderLE* stream)
 static void CheckVersion(StreamReaderLE* stream)
 {
     uint32_t version = stream->GetU4();
-    if ( version != 1 ) {
+    if ( version < 1 || version > 2 ) {
         throw DeadlyImportError( "SIB: Unsupported file version." );
     }
 }