diff --git a/pkgs/by-name/sw/swtpm/package.nix b/pkgs/by-name/sw/swtpm/package.nix
index 55b82abe0335..3b3246aa689a 100644
--- a/pkgs/by-name/sw/swtpm/package.nix
+++ b/pkgs/by-name/sw/swtpm/package.nix
@@ -96,7 +96,7 @@ stdenv.mkDerivation (finalAttrs: {
     # stat: invalid option -- '%'
     # This is caused by the stat program not being the BSD version,
     # as is expected by the test
-    substituteInPlace tests/common --replace \
+    substituteInPlace tests/common tests/sed-inplace --replace \
         'if [[ "$(uname -s)" =~ (Linux|CYGWIN_NT-) ]]; then' \
         'if [[ "$(uname -s)" =~ (Linux|Darwin|CYGWIN_NT-) ]]; then'