diff --git a/src/root/RMicroFileReader.cxx b/src/root/RMicroFileReader.cxx
index e0cb9cd..51acabd 100644
--- a/src/root/RMicroFileReader.cxx
+++ b/src/root/RMicroFileReader.cxx
@@ -1092,7 +1092,7 @@ Root_File_Info get_root_file_info(const char *fname, const char *ntplName, bool
    fileInfo.free_seek_seek   = is_big_file ? offsetof(RTFHeader, fInfoLong.fSeekFree) : offsetof(RTFHeader, fInfoShort.fSeekFree);
    fileInfo.free_nbytes_seek = is_big_file ? offsetof(RTFHeader, fInfoLong.fNbytesFree) : offsetof(RTFHeader, fInfoShort.fNbytesFree);
    RTFKey freeHeader {
-      0, 100, RTFString{kNTupleClassName}, RTFString{ntplName}, RTFString{}, sizeof(RTFNTuple) + sizeof(std::uint64_t)
+      0, 100, RTFString{kNTupleClassName}, RTFString{ntplName ? ntplName : ""}, RTFString{}, sizeof(RTFNTuple) + sizeof(std::uint64_t)
    };
    fileInfo.free_header_nbytes = freeHeader.GetSize();
    return fileInfo;
@@ -1141,7 +1141,7 @@ RMicroFileReader::GetNTupleProper(const char *ntupleName)
    RNTuple_File_Info fileInfo {};
 
 #define FAIL(msg) \
-   fprintf(stderr, "%s", std::string(msg).c_str()); \
+   fprintf(stderr, "%s\n", std::string(msg).c_str()); \
    fileInfo.failed = true; \
    return fileInfo