diff --git a/compiler/tests-check-prim/main.output5 b/compiler/tests-check-prim/main.output5
index ea11136a85..97459c4ce4 100644
--- a/compiler/tests-check-prim/main.output5
+++ b/compiler/tests-check-prim/main.output5
@@ -214,6 +214,3 @@ caml_unix_symlink
 caml_unix_time
 caml_unix_unlink
 
-From +zstd.js:
-caml_zstd_initialize
-
diff --git a/compiler/tests-check-prim/unix-unix.output5 b/compiler/tests-check-prim/unix-unix.output5
index abc455c778..fe7c48361c 100644
--- a/compiler/tests-check-prim/unix-unix.output5
+++ b/compiler/tests-check-prim/unix-unix.output5
@@ -302,6 +302,3 @@ caml_unix_findfirst
 caml_unix_findnext
 caml_unix_startup
 
-From +zstd.js:
-caml_zstd_initialize
-