diff --git a/fhem/contrib/dblog/db_create_mysql.sql b/fhem/contrib/dblog/db_create_mysql.sql
index 59c353c3d..290b7d8ad 100644
--- a/fhem/contrib/dblog/db_create_mysql.sql
+++ b/fhem/contrib/dblog/db_create_mysql.sql
@@ -1,3 +1,26 @@
+##################################################################################
+# Note:
+# =====
+# The default installation of the MySQL/MariaDB database provides 
+# for the use of the <b>utf8_bin</b> collation.
+# With this setting, characters up to 3 bytes long can be stored, 
+# which is generally sufficient for FHEM.
+# However, if characters with a length of 4 bytes (e.g. emojis) 
+# are to be stored in the database, the utf8mb4
+# character set must be used. 
+#
+# in this case the MySQL/MariaDB database would be created with the 
+# following statement:
+#
+#   CREATE DATABASE `fhem` DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_bin;
+# 
+# instead of the statement:
+#
+#   CREATE DATABASE `fhem` DEFAULT CHARACTER SET utf8 COLLATE utf8_bin;
+#
+# shown in the first line below.
+#
+##################################################################################
 CREATE DATABASE `fhem` DEFAULT CHARACTER SET utf8 COLLATE utf8_bin;
 CREATE USER 'fhemuser'@'%' IDENTIFIED BY 'fhempassword';
 CREATE TABLE `fhem`.`history` (TIMESTAMP TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, DEVICE varchar(64), TYPE varchar(64), EVENT varchar(512), READING varchar(64), VALUE varchar(128), UNIT varchar(32));