diff --git a/tests/pkg/rebuild/test.sh b/tests/pkg/rebuild/test.sh
index db64974a9c..6da1f9fe0f 100755
--- a/tests/pkg/rebuild/test.sh
+++ b/tests/pkg/rebuild/test.sh
@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 set -euxo pipefail
 
+source ../../../src/lake/tests/common.sh
+
 rm -rf .lake/build
 
 mkdir -p Rebuild
@@ -24,7 +26,7 @@ echo "-- test" >> Rebuild/Basic.lean
 test_unchanged
 
 # Closed terms do not matter.
-sed -i 's/"world"/"wodd"/' Rebuild/Basic.lean
+sed_i 's/"world"/"wodd"/' Rebuild/Basic.lean
 test_unchanged
 
 # Private declarations do not matter.
@@ -32,7 +34,7 @@ echo 'theorem priv : True := .intro' >> Rebuild/Basic.lean
 test_unchanged
 
 # Lambdas do not matter.
-sed -i 's/"wodd"/dbg_trace "typo"; \0/' Rebuild/Basic.lean
+sed_i 's/"wodd"/dbg_trace "typo"; "wodd"/' Rebuild/Basic.lean
 test_unchanged
 
 # Private definitions do not matter.