diff --git a/src/test/debuginfo/constant-debug-locs.rs b/src/test/debuginfo/constant-debug-locs.rs
index 8fc910d8a6da..f5dab5a55b45 100644
--- a/src/test/debuginfo/constant-debug-locs.rs
+++ b/src/test/debuginfo/constant-debug-locs.rs
@@ -15,7 +15,6 @@
 #![allow(dead_code, unused_variables)]
 #![feature(omit_gdb_pretty_printer_section)]
 #![omit_gdb_pretty_printer_section]
-#![feature(static_mutex)]
 
 // This test makes sure that the compiler doesn't crash when trying to assign
 // debug locations to const-expressions.