diff --git a/.zshenv b/.zshenv
index 42dc2fa..587c879 100644
--- a/.zshenv
+++ b/.zshenv
@@ -85,4 +85,7 @@ alias valgrind='valgrind --track-origins=yes --leak-check=full'
 #
 # Cargo env
 #
-. "$HOME/.cargo/env"
+# if `$HOME/.cargo/env` exists, source it
+if [ -f "$HOME/.cargo/env" ] ; then
+    . "$HOME/.cargo/env"
+fi