diff --git a/cli/zilch-rust.scm b/cli/zilch-rust.scm
index 6ef2f7d..8f1d939 100644
--- a/cli/zilch-rust.scm
+++ b/cli/zilch-rust.scm
@@ -24,9 +24,9 @@ executables in the crate, if unspecified)
                           daemon.
   -L, --print-build-logs  Print derivation logs as they come in.
   -m, --crate-dir DIR     The directory to use as root crate.
-  -r, --replace DIR       Replace the module specified by the go.mod
+  -r, --replace DIR       Replace the crate specified by the Cargo.toml
                           with this source directory, rather than using
-                          the upstream module. Can be specified more
+                          the upstream crate. Can be specified more
                           than once.
   -z, --overrides PATH    Read build script overrides from this file.
                           By default, a stock set of overrides is read.