diff --git a/examples/temp_sensor/rakefile.rb b/examples/temp_sensor/rakefile.rb
index e70b955..9676f44 100644
--- a/examples/temp_sensor/rakefile.rb
+++ b/examples/temp_sensor/rakefile.rb
@@ -20,7 +20,7 @@ REQUIRED_DIRS.each do |v|
 end
 
 # Load default configuration, for now
-DEFAULT_CONFIG_FILE = 'gcc.yml'.freeze
+DEFAULT_CONFIG_FILE = 'gcc_64.yml'.freeze
 configure_toolchain(DEFAULT_CONFIG_FILE)
 
 task :unit do
diff --git a/examples/temp_sensor/rakefile_helper.rb b/examples/temp_sensor/rakefile_helper.rb
index 55bea2d..d2fb7ea 100644
--- a/examples/temp_sensor/rakefile_helper.rb
+++ b/examples/temp_sensor/rakefile_helper.rb
@@ -22,18 +22,41 @@ module RakefileHelpers
     YAML.load(yaml_string)
   end
 
+  def find_cmock_target(targets_dir, config_file)
+    return config_file if File.exist?("#{targets_dir}/#{config_file}")
+
+    basename = File.basename(config_file, '.yml')
+    while basename.include?('_')
+      basename = basename.rpartition('_').first
+      candidate = "#{basename}.yml"
+      return candidate if File.exist?("#{targets_dir}/#{candidate}")
+    end
+
+    nil
+  end
+
   def load_configuration(config_file)
     $cfg_file = config_file
     $proj = load_yaml(File.read('./project.yml'))
 
-    unity_target = "../../vendor/unity/test/targets/#{$cfg_file}"
-    cmock_target = "../../test/targets/#{$cfg_file}"
+    unity_target      = "../../vendor/unity/test/targets/#{$cfg_file}"
+    cmock_targets_dir = '../../test/targets'
 
     if File.exist?(unity_target)
+      puts "Loading Unity target:  #{unity_target}"
       $unity_cfg = load_yaml(File.read(unity_target))
-      $cmock_cfg = File.exist?(cmock_target) ? load_yaml(File.read(cmock_target)) : {}
+
+      cmock_file = find_cmock_target(cmock_targets_dir, $cfg_file)
+      if cmock_file
+        puts "Loading CMock overlay: #{cmock_targets_dir}/#{cmock_file}"
+        $cmock_cfg = load_yaml(File.read("#{cmock_targets_dir}/#{cmock_file}"))
+      else
+        puts "No CMock overlay found for #{$cfg_file}"
+        $cmock_cfg = {}
+      end
     else
-      $unity_cfg = load_yaml(File.read(cmock_target))
+      puts "Loading CMock-only target: #{cmock_targets_dir}/#{$cfg_file}"
+      $unity_cfg = load_yaml(File.read("#{cmock_targets_dir}/#{$cfg_file}"))
       $cmock_cfg = {}
     end
 
diff --git a/test/rakefile_helper.rb b/test/rakefile_helper.rb
index 7f7723e..363bef2 100644
--- a/test/rakefile_helper.rb
+++ b/test/rakefile_helper.rb
@@ -29,20 +29,43 @@ module RakefileHelpers
     end
   end
 
+  def find_cmock_target(targets_dir, config_file)
+    return config_file if File.exist?("#{targets_dir}/#{config_file}")
+
+    basename = File.basename(config_file, '.yml')
+    while basename.include?('_')
+      basename = basename.rpartition('_').first
+      candidate = "#{basename}.yml"
+      return candidate if File.exist?("#{targets_dir}/#{candidate}")
+    end
+
+    nil
+  end
+
   def load_configuration(config_file)
     $cfg_file = config_file
     $proj = load_yaml('./project.yml')
 
-    unity_target = "../vendor/unity/test/targets/#{$cfg_file}"
-    cmock_target = "./targets/#{$cfg_file}"
+    unity_target    = "../vendor/unity/test/targets/#{$cfg_file}"
+    cmock_targets_dir = './targets'
 
     if File.exist?(unity_target)
       # Load Unity base target, then CMock overlay (unsupported list, extra defines)
+      puts "Loading Unity target:  #{unity_target}"
       $unity_cfg = load_yaml(unity_target)
-      $cmock_cfg = File.exist?(cmock_target) ? load_yaml(cmock_target) : {}
+
+      cmock_file = find_cmock_target(cmock_targets_dir, $cfg_file)
+      if cmock_file
+        puts "Loading CMock overlay: #{cmock_targets_dir}/#{cmock_file}"
+        $cmock_cfg = load_yaml("#{cmock_targets_dir}/#{cmock_file}")
+      else
+        puts "No CMock overlay found for #{$cfg_file}"
+        $cmock_cfg = {}
+      end
     else
       # CMock-only target (no Unity equivalent); it uses Unity format directly
-      $unity_cfg = load_yaml(cmock_target)
+      puts "Loading CMock-only target: #{cmock_targets_dir}/#{$cfg_file}"
+      $unity_cfg = load_yaml("#{cmock_targets_dir}/#{$cfg_file}")
       $cmock_cfg = {}
     end