diff --git a/CHANGELOG.md b/CHANGELOG.md
index 86d14717e..608f7027f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ Changelog
 
 * Improve performance when processing stacktraces
   | [#602](https://github.com/bugsnag/bugsnag-ruby/pull/602)
+  | [#603](https://github.com/bugsnag/bugsnag-ruby/pull/603)
 
 ### Deprecated
 
diff --git a/lib/bugsnag/stacktrace.rb b/lib/bugsnag/stacktrace.rb
index f4eb762ca..ac31bb535 100644
--- a/lib/bugsnag/stacktrace.rb
+++ b/lib/bugsnag/stacktrace.rb
@@ -27,10 +27,7 @@ def initialize(backtrace, configuration)
         next(nil) if file.nil?
 
         # Expand relative paths
-        p = Pathname.new(file)
-        if p.relative?
-          file = File.realpath(file) rescue file
-        end
+        file = File.realpath(file) rescue file
 
         # Generate the stacktrace line hash
         trace_hash = {}
diff --git a/spec/stacktrace_spec.rb b/spec/stacktrace_spec.rb
index 0f0487edd..909d4e025 100644
--- a/spec/stacktrace_spec.rb
+++ b/spec/stacktrace_spec.rb
@@ -95,14 +95,11 @@
       configuration = Bugsnag::Configuration.new
       configuration.send_code = false
 
-      dir = File.dirname(__FILE__)
-
       backtrace = [
         "/foo/bar/app/models/user.rb:1:in `something'",
         "/foo/bar/other_vendor/lib/dont.rb:2:in `to_s'",
         "/foo/bar/vendor/lib/ignore_me.rb:3:in `to_s'",
         "/foo/bar/.bundle/lib/ignore_me.rb:4:in `to_s'",
-        "#{dir}/../spec/stacktrace_spec.rb:5:in `something_else'",
       ]
 
       stacktrace = Bugsnag::Stacktrace.new(backtrace, configuration).to_a
@@ -112,7 +109,6 @@
         { file: "/foo/bar/other_vendor/lib/dont.rb", lineNumber: 2, method: "to_s" },
         { file: "/foo/bar/vendor/lib/ignore_me.rb", lineNumber: 3, method: "to_s" },
         { file: "/foo/bar/.bundle/lib/ignore_me.rb", lineNumber: 4, method: "to_s" },
-        { file: "#{dir}/../spec/stacktrace_spec.rb", lineNumber: 5, method: "something_else" },
       ])
     end
 
@@ -140,20 +136,22 @@
       configuration = Bugsnag::Configuration.new
       configuration.send_code = false
 
+      dir = File.dirname(__FILE__)
+
       backtrace = [
         "./spec/spec_helper.rb:1:in `something'",
         "./lib/bugsnag/breadcrumbs/../configuration.rb:100:in `to_s'",
         "lib/bugsnag.rb:20:in `notify'",
+        "#{dir}/../spec/stacktrace_spec.rb:5:in `something_else'",
       ]
 
       stacktrace = Bugsnag::Stacktrace.new(backtrace, configuration).to_a
 
-      dir = File.dirname(__FILE__)
-
       expect(stacktrace).to eq([
         { file: "#{dir}/spec_helper.rb", lineNumber: 1, method: "something" },
         { file: "#{File.dirname(dir)}/lib/bugsnag/configuration.rb", lineNumber: 100, method: "to_s" },
         { file: "#{File.dirname(dir)}/lib/bugsnag.rb", lineNumber: 20, method: "notify" },
+        { file: "#{dir}/stacktrace_spec.rb", lineNumber: 5, method: "something_else" },
       ])
     end
   end