diff --git a/lib/cc/engine/analyzers/javascript/minification_checker.rb b/lib/cc/engine/analyzers/javascript/minification_checker.rb
index e241374b..7ede7ab5 100644
--- a/lib/cc/engine/analyzers/javascript/minification_checker.rb
+++ b/lib/cc/engine/analyzers/javascript/minification_checker.rb
@@ -10,8 +10,12 @@ def initialize(path)
           end
 
           def minified?
-            ratio = content.chars.count / content.lines.count
-            ratio >= MINIFIED_AVG_LINE_LENGTH_CUTOFF
+            if content.lines.count.nonzero?
+              ratio = content.chars.count / content.lines.count
+              ratio >= MINIFIED_AVG_LINE_LENGTH_CUTOFF
+            else
+              false
+            end
           end
 
           private
diff --git a/spec/cc/engine/analyzers/javascript/minification_checker_spec.rb b/spec/cc/engine/analyzers/javascript/minification_checker_spec.rb
index 4a27a03a..2d338e4f 100644
--- a/spec/cc/engine/analyzers/javascript/minification_checker_spec.rb
+++ b/spec/cc/engine/analyzers/javascript/minification_checker_spec.rb
@@ -18,6 +18,11 @@ module Javascript
               path = fixture_path("normal_js_file.js")
               expect(MinificationChecker.new(path)).to_not be_minified
             end
+
+            it "returns false for empty files" do
+              path = fixture_path("empty_file.js")
+              expect(MinificationChecker.new(path)).to_not be_minified
+            end
           end
         end
       end
diff --git a/spec/fixtures/empty_file.js b/spec/fixtures/empty_file.js
new file mode 100644
index 00000000..e69de29b