diff --git a/lib/m/executor.rb b/lib/m/executor.rb
index 9c37e19..66a2621 100644
--- a/lib/m/executor.rb
+++ b/lib/m/executor.rb
@@ -73,7 +73,9 @@ def suites
 
       begin
         # Fire up this Ruby file. Let's hope it actually has tests.
-        require "./#{testable.file}"
+        file = testable.file
+        file = "./#{testable.file}" unless file.start_with? "/"
+        require file
       rescue LoadError => e
         # Fail with a happier error message instead of spitting out a backtrace from this gem
         warn "Failed loading test file:\n#{e.message}"
diff --git a/test/active_support_test.rb b/test/active_support_test.rb
index 3431d13..f3ad041 100644
--- a/test/active_support_test.rb
+++ b/test/active_support_test.rb
@@ -1,6 +1,11 @@
 require "test_helper"
 
 class ActiveSupportTest < MTest
+  def test_run_simple_test_by_line_number_with_absolute_path
+    output = m File.join(__dir__, "examples/active_support_example_test.rb:9")
+    assert_output(/1 (runs|tests), 1 assertions/, output)
+  end
+
   def test_run_simple_test_by_line_number
     output = m "examples/active_support_example_test.rb:9"
     assert_output(/1 (runs|tests), 1 assertions/, output)
diff --git a/test/minitest_4_test.rb b/test/minitest_4_test.rb
index 8da1a48..d4c215c 100644
--- a/test/minitest_4_test.rb
+++ b/test/minitest_4_test.rb
@@ -2,6 +2,11 @@
 
 if M::Frameworks.minitest4?
   class Minitest4Test < MTest
+    def test_run_simple_test_by_line_number_with_absolute_path
+      output = m File.join(__dir__, "examples/minitest_4_example_test.rb:19")
+      assert_output(/1 tests, 1 assertions/, output)
+    end
+
     def test_run_simple_test_by_line_number
       output = m "examples/minitest_4_example_test.rb:19"
       assert_output(/1 tests, 1 assertions/, output)
diff --git a/test/minitest_5_test.rb b/test/minitest_5_test.rb
index 56b53d8..fa6b82c 100644
--- a/test/minitest_5_test.rb
+++ b/test/minitest_5_test.rb
@@ -1,6 +1,11 @@
 require "test_helper"
 if M::Frameworks.minitest5?
   class Minitest5Test < MTest
+    def test_run_simple_test_by_line_number_with_absolute_path
+      output = m File.join(__dir__, "examples/minitest_5_example_test.rb:19")
+      assert_output(/1 runs, 1 assertions/, output)
+    end
+
     def test_run_simple_test_by_line_number
       output = m "examples/minitest_5_example_test.rb:19"
       assert_output(/1 runs, 1 assertions/, output)
diff --git a/test/test_unit_test.rb b/test/test_unit_test.rb
index 28c5829..564df5e 100644
--- a/test/test_unit_test.rb
+++ b/test/test_unit_test.rb
@@ -2,6 +2,11 @@
 
 if M::Frameworks.test_unit?
   class TestUnitTest < MTest
+    def test_run_simple_test_by_line_number_with_absolute_path
+      output = m File.join(__dir__, "examples/test_unit_example_test.rb:9")
+      assert_output(/1 tests, 1 assertions/, output)
+    end
+
     def test_run_simple_test_by_line_number
       output = m "examples/test_unit_example_test.rb:9"
       assert_output(/1 tests, 1 assertions/, output)