diff --git a/lib/auth0/internal/types/model.rb b/lib/auth0/internal/types/model.rb
index 28abff171..a08007830 100644
--- a/lib/auth0/internal/types/model.rb
+++ b/lib/auth0/internal/types/model.rb
@@ -141,13 +141,22 @@ def initialize(values = {})
           values = Utils.symbolize_keys(values.dup)
 
           self.class.fields.each do |field_name, field|
-            value = values.delete(field.api_name.to_sym) || values.delete(field.api_name) || values.delete(field_name)
+            # key?/nil? checks keep an explicit `false`, and both keys are consumed so neither leaks into extra fields
+            value = nil
+            [field.api_name.to_sym, field_name].uniq.each do |key|
+              next unless values.key?(key)
 
-            field_value = value || (if field.literal?
-                                      field.value
-                                    elsif field.default
-                                      field.default
-                                    end)
+              candidate = values.delete(key)
+              value = candidate if value.nil?
+            end
+
+            field_value = if !value.nil?
+                            value
+                          elsif field.literal?
+                            field.value
+                          elsif !field.default.nil?
+                            field.default
+                          end
 
             @data[field_name] = Utils.coerce(field.type, field_value)
           end
diff --git a/test/unit/internal/types/test_model.rb b/test/unit/internal/types/test_model.rb
index 785a98ac1..5cf0372b1 100644
--- a/test/unit/internal/types/test_model.rb
+++ b/test/unit/internal/types/test_model.rb
@@ -24,6 +24,12 @@ class ExampleWithDefaults < ExampleModel
     field :type, String, default: "example"
   end
 
+  class ExampleWithBooleans < Auth0::Internal::Types::Model
+    field :blocked, Auth0::Internal::Types::Boolean, optional: true
+    field :active, Auth0::Internal::Types::Boolean, optional: true, api_name: "isActive"
+    field :enabled, Auth0::Internal::Types::Boolean, optional: true, default: false
+  end
+
   class ExampleChild < Auth0::Internal::Types::Model
     field :value, String
   end
@@ -110,6 +116,42 @@ class ExampleParent < Auth0::Internal::Types::Model
       assert_equal 2014, example.year
       refute_respond_to example, :yearOfRelease
     end
+
+    it "preserves false values on construction and in to_h" do
+      example = ExampleWithBooleans.new(blocked: false, active: false)
+
+      assert_same false, example.blocked
+      assert_same false, example.active
+      assert_same false, example.to_h["blocked"]
+      assert_same false, example.to_h["isActive"]
+    end
+
+    it "preserves false values when loaded from JSON" do
+      example = ExampleWithBooleans.load('{"blocked":false,"isActive":false}')
+
+      assert_same false, example.blocked
+      assert_same false, example.active
+    end
+
+    it "keeps an explicit false instead of falling back to the default" do
+      assert_same false, ExampleWithBooleans.new.enabled
+      assert_same true, ExampleWithBooleans.new(enabled: true).enabled
+      assert_same false, ExampleWithBooleans.new(enabled: false).enabled
+    end
+
+    it "falls back to the field name when the api_name value is nil" do
+      example = ExampleWithBooleans.new(isActive: nil, active: true)
+
+      assert_same true, example.active
+      refute_respond_to example, :isActive
+    end
+
+    it "does not leak a consumed key into extra fields" do
+      example = ExampleWithBooleans.new(isActive: false, active: true)
+
+      assert_same false, example.active
+      refute ExampleWithBooleans.extra_fields.key?(:active)
+    end
   end
 
   describe "#inspect" do