diff --git a/lib/pact/hal/link.rb b/lib/pact/hal/link.rb
index e8d19662..9414e8ee 100644
--- a/lib/pact/hal/link.rb
+++ b/lib/pact/hal/link.rb
@@ -56,7 +56,7 @@ def wrap_response(http_response)
       def expand_url(params, url)
         new_url = url
         params.each do | key, value |
-          new_url = new_url.gsub('{' + key.to_s + '}', value)
+          new_url = new_url.gsub('{' + key.to_s + '}', URI.escape(value))
         end
         new_url
       end
diff --git a/spec/lib/pact/hal/link_spec.rb b/spec/lib/pact/hal/link_spec.rb
index c5df8f0b..0a482e09 100644
--- a/spec/lib/pact/hal/link_spec.rb
+++ b/spec/lib/pact/hal/link_spec.rb
@@ -98,6 +98,10 @@ module Hal
         it "returns a duplicate Link with the expanded href" do
           expect(subject.expand(bar: 'wiffle').href).to eq "http://foo/wiffle"
         end
+
+        it "returns a duplicate Link with the expanded href with URL escaping" do
+          expect(subject.expand(bar: 'wiffle meep').href).to eq "http://foo/wiffle%20meep"
+        end
       end
     end
   end