diff --git a/subreader.c b/subreader.c
index 950a4aaff0..c26f85d540 100644
--- a/subreader.c
+++ b/subreader.c
@@ -586,7 +586,7 @@ subtitle* sub_read_file (char *filename) {
 	    sub_read_line_aqt
 
     };
-
+    if(filename==NULL) return NULL; //qnx segfault
     fd=fopen (filename, "r"); if (!fd) return NULL;
 
     sub_format=sub_autodetect (fd);