diff --git a/instrumentation/logger/lib/opentelemetry/instrumentation/logger/patches/logger.rb b/instrumentation/logger/lib/opentelemetry/instrumentation/logger/patches/logger.rb
index b8a13216f6..13d3006116 100644
--- a/instrumentation/logger/lib/opentelemetry/instrumentation/logger/patches/logger.rb
+++ b/instrumentation/logger/lib/opentelemetry/instrumentation/logger/patches/logger.rb
@@ -23,7 +23,7 @@ def format_message(severity, datetime, progname, msg)
               severity_text: severity,
               severity_number: severity_number(severity),
               timestamp: datetime,
-              body: msg,
+              body: formatted_message,
               context: OpenTelemetry::Context.current
             )
             formatted_message
diff --git a/instrumentation/logger/test/opentelemetry/instrumentation/logger/patches/active_support_broadcast_logger_test.rb b/instrumentation/logger/test/opentelemetry/instrumentation/logger/patches/active_support_broadcast_logger_test.rb
index 449b4e5632..f9cb36830c 100644
--- a/instrumentation/logger/test/opentelemetry/instrumentation/logger/patches/active_support_broadcast_logger_test.rb
+++ b/instrumentation/logger/test/opentelemetry/instrumentation/logger/patches/active_support_broadcast_logger_test.rb
@@ -38,7 +38,8 @@
 
       assert_equal 1, log_records.size
       assert_equal 'DEBUG', log_records.first.severity_text
-      assert_equal body, log_records.first.body
+      assert_includes log_records.first.body, 'DEBUG'
+      assert_includes log_records.first.body, body
     end
   end
 
@@ -59,7 +60,8 @@
 
       assert_equal 1, log_records.size
       assert_equal 'ANY', log_records.first.severity_text
-      assert_equal body, log_records.first.body
+      assert_includes log_records.first.body, 'ANY'
+      assert_includes log_records.first.body, body
     end
   end
 
@@ -81,7 +83,8 @@
 
         assert_equal 1, log_records.size
         assert_equal severity.upcase, log_records.first.severity_text
-        assert_equal body, log_records.first.body
+        assert_includes log_records.first.body, severity.upcase
+        assert_includes log_records.first.body, body
       end
     end
   end
diff --git a/instrumentation/logger/test/opentelemetry/instrumentation/logger/patches/logger_test.rb b/instrumentation/logger/test/opentelemetry/instrumentation/logger/patches/logger_test.rb
index 7c91621601..1f85abce6a 100644
--- a/instrumentation/logger/test/opentelemetry/instrumentation/logger/patches/logger_test.rb
+++ b/instrumentation/logger/test/opentelemetry/instrumentation/logger/patches/logger_test.rb
@@ -42,7 +42,8 @@
 
       Time.stub(:now, timestamp) do
         ruby_logger.debug(msg)
-        assert_equal(msg, log_record.body)
+        assert_includes(log_record.body, msg)
+        assert_includes(log_record.body, 'DEBUG')
         assert_equal('DEBUG', log_record.severity_text)
         assert_equal(5, log_record.severity_number)
         assert_equal(nano_timestamp, log_record.timestamp)