diff --git a/lib/cc/engine/analyzers/engine_config.rb b/lib/cc/engine/analyzers/engine_config.rb
index 17d01bac..9c5bdc54 100644
--- a/lib/cc/engine/analyzers/engine_config.rb
+++ b/lib/cc/engine/analyzers/engine_config.rb
@@ -6,6 +6,10 @@ def initialize(hash)
           @config = normalize(hash)
         end
 
+        def debug?
+          config.fetch("config", {}).fetch("debug", false)
+        end
+
         def include_paths
           config.fetch("include_paths", ["./"])
         end
diff --git a/lib/cc/engine/analyzers/reporter.rb b/lib/cc/engine/analyzers/reporter.rb
index 91ea3ef7..90c6b79e 100644
--- a/lib/cc/engine/analyzers/reporter.rb
+++ b/lib/cc/engine/analyzers/reporter.rb
@@ -16,8 +16,12 @@ def initialize(engine_config, language_strategy, io)
         end
 
         def run
+          debug("Processing #{language_strategy.files.count} files concurrency=#{engine_config.concurrency}")
+
           process_files
           report
+
+          debug("Reported #{reports.size} violations...")
         end
 
         def process_files
@@ -26,12 +30,20 @@ def process_files
             concurrency: engine_config.concurrency
           )
 
+          processed_files_count = Concurrent::AtomicFixnum.new
+
           pool.run do |file|
+            debug("Processing file: #{file}")
+
             sexp = language_strategy.run(file)
             process_sexp(sexp)
+
+            processed_files_count.increment
           end
 
           pool.join
+
+          debug("Processed #{processed_files_count.value} files")
         end
 
         def report
@@ -39,6 +51,8 @@ def report
             violations = new_violations(issue)
 
             violations.each do |violation|
+              debug("Violation name=#{violation.report_name} mass=#{violation.mass}")
+
               unless reports.include?(violation.report_name)
                 reports.add(violation.report_name)
                 io.puts "#{violation.format.to_json}\0"
@@ -80,6 +94,10 @@ def flay_options
             only: nil
           }
         end
+
+        def debug(message)
+          $stderr.puts(message) if engine_config.debug?
+        end
       end
     end
   end
diff --git a/spec/support/helpers/analyzer_spec_helpers.rb b/spec/support/helpers/analyzer_spec_helpers.rb
index 1968057f..83f28d65 100644
--- a/spec/support/helpers/analyzer_spec_helpers.rb
+++ b/spec/support/helpers/analyzer_spec_helpers.rb
@@ -11,7 +11,7 @@ def run_engine(config = nil)
     io = StringIO.new
 
     engine = described_class.new(engine_config: config)
-    reporter = ::CC::Engine::Analyzers::Reporter.new(double(concurrency: 2), engine, io)
+    reporter = ::CC::Engine::Analyzers::Reporter.new(config, engine, io)
 
     reporter.run