diff --git a/src/analyses/libraryFunctions.ml b/src/analyses/libraryFunctions.ml
index 4ce755f71e..379f8b621b 100644
--- a/src/analyses/libraryFunctions.ml
+++ b/src/analyses/libraryFunctions.ml
@@ -386,7 +386,6 @@ let posix_descs_list: (string * LibraryDesc.t) list = LibraryDsl.[
     ("unlink", unknown [drop "pathname" [r]]);
     ("popen", unknown [drop "command" [r]; drop "type" [r]]);
     ("stat", unknown [drop "pathname" [r]; drop "statbuf" [w]]);
-    ("fstat", unknown [drop "fd" []; drop "statbuf" [w]]);
     ("statfs", unknown [drop "path" [r]; drop "buf" [w]]);
   ]