diff --git a/plugins/hosts/darwin/cap/rdp.rb b/plugins/hosts/darwin/cap/rdp.rb
index 3a02589d6..1fb7486b5 100644
--- a/plugins/hosts/darwin/cap/rdp.rb
+++ b/plugins/hosts/darwin/cap/rdp.rb
@@ -40,12 +40,12 @@ module VagrantPlugins
             f.binmode
 
             opts.each do |k, v|
-              f.write("#{k}:#{v}")
+              f.puts("#{k}:#{v}")
             end
 
             if rdp_info[:extra_args]
               rdp_info[:extra_args].each do |arg|
-                f.write("#{arg}")
+                f.puts("#{arg}")
               end
             end
 
diff --git a/test/unit/plugins/hosts/darwin/cap/rdp_test.rb b/test/unit/plugins/hosts/darwin/cap/rdp_test.rb
index cc6b1bade..d98a2f574 100644
--- a/test/unit/plugins/hosts/darwin/cap/rdp_test.rb
+++ b/test/unit/plugins/hosts/darwin/cap/rdp_test.rb
@@ -13,18 +13,18 @@ describe VagrantPlugins::HostDarwin::Cap::RDP do
 
   it "includes the default options" do
     path = described_class.generate_config_file(rdp_info)
-    result = File.read(path)
-    expect(result).to match("drivestoredirect:s:*")
-    expect(result).to match("full address:s:host:port")
-    expect(result).to match("prompt for credentials:i:1")
-    expect(result).to match("username:s:username")
+    result = File.readlines(path).map(&:chomp)
+    expect(result).to include("drivestoredirect:s:*")
+    expect(result).to include("full address:s:host:port")
+    expect(result).to include("prompt for credentials:i:1")
+    expect(result).to include("username:s:username")
   end
 
   it "includes extra RDP arguments" do
     rdp_info.merge!(extra_args: ["screen mode id:i:0"])
     path = described_class.generate_config_file(rdp_info)
-    result = File.read(path)
-    expect(result).to match("screen mode id:i:0")
+    result = File.readlines(path).map(&:chomp)
+    expect(result).to include("screen mode id:i:0")
   end
 
   it "opens the RDP file" do