diff --git a/src/lib/gc_metrics.ml b/src/lib/gc_metrics.ml
index dfc3e41d..42dacac6 100644
--- a/src/lib/gc_metrics.ml
+++ b/src/lib/gc_metrics.ml
@@ -1,5 +1,3 @@
-open Common_
-
 open struct
   let bytes_per_word = Sys.word_size / 8