diff --git a/README.org b/README.org
index 0644a38..f6d752c 100644
--- a/README.org
+++ b/README.org
@@ -308,6 +308,10 @@ This configuration is nearly identical to the default, except for a few key diff
   networking.interfaces.enp6s0f1.useDHCP = true;
   networking.interfaces.wlp0s20f3.useDHCP = true;
 
+  # Pre-configured wireless networks.
+  networking.wireless.networks.MyWiFi_5C1870.pskRaw =
+    "409b3c85fef1c5737f284d2f82f20dc6023e41804e862d4fa26265ef8193b326";
+
   services.openssh.enable = true;
   services.printing.enable = true;
 
diff --git a/hosts/acernitro/configuration.nix b/hosts/acernitro/configuration.nix
index ee83bde..21c33a6 100644
--- a/hosts/acernitro/configuration.nix
+++ b/hosts/acernitro/configuration.nix
@@ -15,6 +15,10 @@
   networking.interfaces.enp6s0f1.useDHCP = true;
   networking.interfaces.wlp0s20f3.useDHCP = true;
 
+  # Pre-configured wireless networks.
+  networking.wireless.networks.MyWiFi_5C1870.pskRaw =
+    "409b3c85fef1c5737f284d2f82f20dc6023e41804e862d4fa26265ef8193b326";
+
   services.openssh.enable = true;
   services.printing.enable = true;