diff --git a/scripts/dev-rust-stack.ps1 b/scripts/dev-rust-stack.ps1
index 1a17db4c..d0d5227b 100644
--- a/scripts/dev-rust-stack.ps1
+++ b/scripts/dev-rust-stack.ps1
@@ -246,7 +246,6 @@ try {
             -Name "spacetimedb" `
             -FilePath $spacetimeCommand.Source `
             -Arguments @(
-                "--root-dir", $SpacetimeRootDir,
                 "start",
                 "--edition", "standalone",
                 "--listen-addr", "$SpacetimeHost`:$SpacetimePort"
diff --git a/scripts/dev-rust-stack.sh b/scripts/dev-rust-stack.sh
index 185c1931..591c910d 100644
--- a/scripts/dev-rust-stack.sh
+++ b/scripts/dev-rust-stack.sh
@@ -243,7 +243,6 @@ if [[ "${SKIP_SPACETIME}" -ne 1 ]]; then
   (
     cd "${SERVER_RS_DIR}"
     exec spacetime \
-      --root-dir "${SPACETIME_ROOT_DIR}" \
       start \
       --edition standalone \
       --listen-addr "${SPACETIME_HOST}:${SPACETIME_PORT}"