diff --git a/lib/mrsk/cli/build.rb b/lib/mrsk/cli/build.rb
index e52b3358..a1261fe3 100644
--- a/lib/mrsk/cli/build.rb
+++ b/lib/mrsk/cli/build.rb
@@ -19,7 +19,13 @@ class Mrsk::Cli::Build < Mrsk::Cli::Base
 
       run_locally do
         begin
-          MRSK.with_verbosity(:debug) { execute *MRSK.builder.push }
+          MRSK.with_verbosity(:debug) do
+            if (uncommitted_changes = Mrsk::Utils.uncommitted_changes).present?
+              say "The following paths have uncommitted changes (check your .gitignore file):\n #{uncommitted_changes}", :yellow
+            end
+
+            execute *MRSK.builder.push
+          end
         rescue SSHKit::Command::Failed => e
           if e.message =~ /(no builder)|(no such file or directory)/
             error "Missing compatible builder, so creating a new one first"
diff --git a/lib/mrsk/configuration.rb b/lib/mrsk/configuration.rb
index e570de55..1473728b 100644
--- a/lib/mrsk/configuration.rb
+++ b/lib/mrsk/configuration.rb
@@ -262,7 +262,7 @@ class Mrsk::Configuration
     def git_version
       @git_version ||=
         if system("git rev-parse")
-          uncommitted_suffix = `git status --porcelain`.strip.present? ? "_uncommitted_#{SecureRandom.hex(8)}" : ""
+          uncommitted_suffix = Mrsk::Utils.uncommitted_changes.present? ? "_uncommitted_#{SecureRandom.hex(8)}" : ""
 
           "#{`git rev-parse HEAD`.strip}#{uncommitted_suffix}"
         else
diff --git a/lib/mrsk/utils.rb b/lib/mrsk/utils.rb
index e463f547..939c92dd 100644
--- a/lib/mrsk/utils.rb
+++ b/lib/mrsk/utils.rb
@@ -93,4 +93,8 @@ module Mrsk::Utils
       end
     end
   end
+
+  def uncommitted_changes
+    `git status --porcelain`.strip
+  end
 end
diff --git a/test/configuration_test.rb b/test/configuration_test.rb
index 3d362293..695f8e72 100644
--- a/test/configuration_test.rb
+++ b/test/configuration_test.rb
@@ -84,7 +84,7 @@ class ConfigurationTest < ActiveSupport::TestCase
     ENV.delete("VERSION")
 
     @config.expects(:`).with("git rev-parse HEAD").returns("git-version")
-    @config.expects(:`).with("git status --porcelain").returns("")
+    Mrsk::Utils.expects(:uncommitted_changes).returns("")
     assert_equal "git-version", @config.version
   end
 
@@ -92,7 +92,8 @@ class ConfigurationTest < ActiveSupport::TestCase
     ENV.delete("VERSION")
 
     @config.expects(:`).with("git rev-parse HEAD").returns("git-version")
-    @config.expects(:`).with("git status --porcelain").returns("M   file\n")
+    # @config.expects(:`).with("git status --porcelain").returns("M   file\n")
+    Mrsk::Utils.expects(:uncommitted_changes).returns("M   file\n")
     assert_match /^git-version_uncommitted_[0-9a-f]{16}$/, @config.version
   end
 
diff --git a/test/utils_test.rb b/test/utils_test.rb
index 24a1b96b..0c42d72b 100644
--- a/test/utils_test.rb
+++ b/test/utils_test.rb
@@ -61,4 +61,14 @@ class UtilsTest < ActiveSupport::TestCase
     assert_equal "\"https://example.com/\\$2\"",
       Mrsk::Utils.escape_shell_value("https://example.com/$2")
   end
+
+  test "uncommitted changes exist" do
+    Mrsk::Utils.expects(:`).with("git status --porcelain").returns("M   file\n")
+    assert_equal "M   file", Mrsk::Utils.uncommitted_changes
+  end
+
+  test "uncommitted changes do not exist" do
+    Mrsk::Utils.expects(:`).with("git status --porcelain").returns("")
+    assert_equal "", Mrsk::Utils.uncommitted_changes
+  end
 end