diff --git a/modules/programs/vdirsyncer-accounts.nix b/modules/programs/vdirsyncer-accounts.nix
index fac4d01d..4edd1742 100644
--- a/modules/programs/vdirsyncer-accounts.nix
+++ b/modules/programs/vdirsyncer-accounts.nix
@@ -93,9 +93,10 @@ in {
     };
 
     verify = mkOption {
-      type = types.nullOr types.bool;
+      type = types.nullOr types.path;
       default = null;
-      description = "Verify SSL certificate.";
+      description = "Null or path to certificate to verify SSL against";
+      example = "/path/to/cert.pem";
     };
 
     verifyFingerprint = mkOption {
diff --git a/modules/programs/vdirsyncer.nix b/modules/programs/vdirsyncer.nix
index 545df71b..32c00339 100644
--- a/modules/programs/vdirsyncer.nix
+++ b/modules/programs/vdirsyncer.nix
@@ -92,7 +92,7 @@ let
     else if (n == "passwordPrompt") then
       ''password.fetch = ["prompt", "${v}"]''
     else if (n == "verify") then
-      "verify = ${if v then "true" else "false"}"
+      ''verify = "${v}"''
     else if (n == "verifyFingerprint") then
       ''verify_fingerprint = "${v}"''
     else if (n == "auth") then