diff --git a/libexec/rbenv-which b/libexec/rbenv-which
index c4966c7a..204988b2 100755
--- a/libexec/rbenv-which
+++ b/libexec/rbenv-which
@@ -50,7 +50,7 @@ fi
 
 if [ "$RBENV_VERSION" = "system" ]; then
   PATH="$(remove_from_path "${RBENV_ROOT}/shims")"
-  RBENV_COMMAND_PATH="$(command -v "$RBENV_COMMAND")"
+  RBENV_COMMAND_PATH="$(command -v "$RBENV_COMMAND" || true)"
 else
   RBENV_COMMAND_PATH="${RBENV_ROOT}/versions/${RBENV_VERSION}/bin/${RBENV_COMMAND}"
 fi