diff --git a/lib/jsonschema/default.nix b/lib/jsonschema/default.nix
index f51d97218..73b511f8f 100644
--- a/lib/jsonschema/default.nix
+++ b/lib/jsonschema/default.nix
@@ -100,9 +100,12 @@ rec {
       defaultText ? null,
       ...
     }@attrs:
+    let
+      sanitizedAttrs = removeAttrs attrs (lib.optionals (defaultText != null) [ "default" ]);
+    in
     {
       "$exportedModuleInfo" =
-        attrs
+        sanitizedAttrs
         // {
           inherit path required;
         }
diff --git a/lib/jsonschema/test_parseOption.nix b/lib/jsonschema/test_parseOption.nix
index 3cdf32da0..50d204e12 100644
--- a/lib/jsonschema/test_parseOption.nix
+++ b/lib/jsonschema/test_parseOption.nix
@@ -568,4 +568,27 @@ in
       type = "object";
     };
   };
+
+  # Default MUST not be evaluated if defaultText is present
+  test_default_lazyness = {
+    expr = (
+      parseOption (evalModuleOptions {
+        options.opt = lib.mkOption {
+          type = lib.types.bool;
+          default = throw "This option is lazy";
+          defaultText = "This option is lazy";
+        };
+      })
+    );
+    expected = {
+      additionalProperties = false;
+      properties = {
+        opt = {
+          type = "boolean";
+        };
+      };
+      required = [ ];
+      type = "object";
+    };
+  };
 }