diff --git a/spec/granite/transactions/update_spec.cr b/spec/granite/transactions/update_spec.cr
index d0f3e348..f76cd01b 100644
--- a/spec/granite/transactions/update_spec.cr
+++ b/spec/granite/transactions/update_spec.cr
@@ -11,6 +11,16 @@ describe "#update" do
     Parent.find!(parent.id).name.should eq "Other parent"
   end
 
+  it "allows setting a value to nil" do
+    model = Teacher.create!(name: "New Parent")
+
+    model.update(name: nil)
+
+    model.name.should be_nil
+
+    Teacher.find!(model.id).name.should be_nil
+  end
+
   it "does not update an invalid object" do
     parent = Parent.new(name: "New Parent")
     parent.save!
diff --git a/src/granite/columns.cr b/src/granite/columns.cr
index 77357869..464b1043 100644
--- a/src/granite/columns.cr
+++ b/src/granite/columns.cr
@@ -118,7 +118,7 @@ module Granite::Columns
 
   def set_attributes(hash : Hash(String | Symbol, Type)) : self
     {% for column in @type.instance_vars.select { |ivar| (ann = ivar.annotation(Granite::Column)) && (!ann[:primary] || (ann[:primary] && ann[:auto] == false)) } %}
-      if hash.has_key?({{column.stringify}}) && !hash[{{column.stringify}}].nil?
+      if hash.has_key?({{column.stringify}})
         begin
           val = Granite::Type.convert_type hash[{{column.stringify}}], {{column.type}}
         rescue ex : ArgumentError