diff --git a/app/services/imports/source_detector.rb b/app/services/imports/source_detector.rb
index c6c2844f..d5b0a2c6 100644
--- a/app/services/imports/source_detector.rb
+++ b/app/services/imports/source_detector.rb
@@ -118,12 +118,8 @@ class Imports::SourceDetector
   end
 
   def kml_file?
-    return false unless filename
+    return false unless filename&.downcase&.end_with?('.kml', '.kmz')
 
-    # Must have .kml or .kmz extension AND contain KML XML structure
-    return false unless filename.downcase.end_with?('.kml', '.kmz')
-
-    # Check content for KML structure
     content_to_check =
       if file_path && File.exist?(file_path)
         # Read first 1KB for KML detection
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 146ec651..8dd9762f 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -73,7 +73,10 @@ Rails.application.configure do
   config.log_level = ENV.fetch('RAILS_LOG_LEVEL', 'info')
 
   # Use a different cache store in production.
-  config.cache_store = :redis_cache_store, { url: "#{ENV['REDIS_URL']}/#{ENV.fetch('RAILS_CACHE_DB', 0)}" }
+  config.cache_store = :redis_cache_store, {
+    url: ENV['REDIS_URL'],
+    db: ENV.fetch('RAILS_CACHE_DB', 0)
+  }
 
   # Use a real queuing backend for Active Job (and separate queues per environment).
   config.active_job.queue_adapter = :sidekiq
diff --git a/spec/services/imports/source_detector_spec.rb b/spec/services/imports/source_detector_spec.rb
index e3cba810..0f3766c4 100644
--- a/spec/services/imports/source_detector_spec.rb
+++ b/spec/services/imports/source_detector_spec.rb
@@ -74,6 +74,15 @@ RSpec.describe Imports::SourceDetector do
       end
     end
 
+    context 'with KML file' do
+      let(:file_content) { file_fixture('kml/points_with_timestamps.kml').read }
+      let(:filename) { 'test.kml' }
+
+      it 'detects kml format' do
+        expect(detector.detect_source).to eq(:kml)
+      end
+    end
+
     context 'with invalid JSON' do
       let(:file_content) { 'invalid json content' }
 
@@ -145,6 +154,15 @@ RSpec.describe Imports::SourceDetector do
         expect(detector.detect_source).to eq(:geojson)
       end
     end
+
+    context 'with KML file' do
+      let(:fixture_path) { file_fixture('kml/points_with_timestamps.kml').to_s }
+
+      it 'detects source correctly from file path' do
+        detector = described_class.new_from_file_header(fixture_path)
+        expect(detector.detect_source).to eq(:kml)
+      end
+    end
   end
 
   describe 'detection accuracy with real fixture files' do
@@ -170,5 +188,11 @@ RSpec.describe Imports::SourceDetector do
     include_examples 'detects format correctly', :gpx, 'gpx/arc_example.gpx'
     include_examples 'detects format correctly', :gpx, 'gpx/garmin_example.gpx'
     include_examples 'detects format correctly', :gpx, 'gpx/gpx_track_multiple_segments.gpx'
+
+    # Test KML files
+    include_examples 'detects format correctly', :kml, 'kml/points_with_timestamps.kml'
+    include_examples 'detects format correctly', :kml, 'kml/linestring_track.kml'
+    include_examples 'detects format correctly', :kml, 'kml/gx_track.kml'
+    include_examples 'detects format correctly', :kml, 'kml/multigeometry.kml'
   end
 end