diff --git a/zsh/func/init-unix-env b/zsh/func/init-unix-env
new file mode 100644
index 0000000..fc224e7
--- /dev/null
+++ b/zsh/func/init-unix-env
@@ -0,0 +1,20 @@
+# Eryn Wells <eryn@erynwells.me>
+
+autoload -Uz binary_exists
+
+function init-unix-env
+{
+    export PAGER="less"
+    export MANPAGER=$PAGER
+    export VISUAL=$EDITOR
+    export LESSHISTFILE="-"
+    export GREP_OPTIONS="--color=auto"
+    export GREP_COLOR="1;32"
+
+    if binary_exists gpg2; then
+        # Make sure gpg2 knows what to do with the curses-based smartcard PIN prompt.
+        export GPG_TTY=`tty`
+    fi
+}
+
+init-unix-env "$@"
diff --git a/zsh/func/init_env b/zsh/func/init_env
deleted file mode 100644
index 67f7c74..0000000
--- a/zsh/func/init_env
+++ /dev/null
@@ -1,11 +0,0 @@
-# Eryn Wells <eryn@erynwells.me>
-
-export PAGER="less"
-export MANPAGER=$PAGER
-export VISUAL=$EDITOR
-export LESSHISTFILE="-"
-export GREP_OPTIONS="--color=auto"
-export GREP_COLOR="1;32"
-
-# Make sure gpg2 knows what to do with the curses-based smartcard PIN prompt.
-export GPG_TTY=`tty`
diff --git a/zshenv b/zshenv
index b35889a..7050af8 100644
--- a/zshenv
+++ b/zshenv
@@ -23,7 +23,7 @@ autoload -Uz do_init_functions
 typeset -a zsh_init_env_functions=( \
     init-path \
     init_system_parameters \
-    init_env \
+    init-unix-env \
     init_env_aliases \
     init_env_python \
     init_env_playdate \