diff --git a/src/libs/zbxcfg/cfg.c b/src/libs/zbxcfg/cfg.c
index 29b661deda9..456c0587abf 100644
--- a/src/libs/zbxcfg/cfg.c
+++ b/src/libs/zbxcfg/cfg.c
@@ -426,9 +426,9 @@ static int	__parse_cfg_file(const char *cfg_file, struct cfg_line *cfg, int leve
 
 	FILE		*file;
 	int		i, lineno, param_valid;
-	char		line[MAX_STRING_LEN + 3], *parameter, *value;
+	char		line[MAX_STRING_LEN + 3], *parameter, *value, *cfg_options_read;
 	zbx_uint64_t	var;
-	size_t		len;
+	size_t		len, cfg_size = 0;
 #ifdef _WINDOWS
 	wchar_t		*wcfg_file;
 #endif
@@ -438,6 +438,11 @@ static int	__parse_cfg_file(const char *cfg_file, struct cfg_line *cfg, int leve
 		return FAIL;
 	}
 
+	for (i = 0; NULL != cfg[i].parameter; i++)
+		cfg_size++;
+
+	cfg_options_read = calloc(cfg_size, sizeof(*cfg_options_read));
+
 	if (NULL != cfg_file)
 	{
 #ifdef _WINDOWS
@@ -497,6 +502,18 @@ static int	__parse_cfg_file(const char *cfg_file, struct cfg_line *cfg, int leve
 				if (0 != strcmp(cfg[i].parameter, parameter))
 					continue;
 
+				if (TYPE_MULTISTRING != cfg[i].type && TYPE_CUSTOM != cfg[i].type)
+				{
+					if (0 != cfg_options_read[i])
+					{
+						zabbix_log(LOG_LEVEL_WARNING, "parameter %s is listed more than once at"
+								" line %d, previous values will be ignored",
+								parameter, lineno);
+					}
+
+					cfg_options_read[i] = 1;
+				}
+
 				param_valid = 1;
 
 				zabbix_log(LOG_LEVEL_DEBUG, "accepted configuration parameter: '%s' = '%s'",
@@ -582,6 +599,8 @@ static int	__parse_cfg_file(const char *cfg_file, struct cfg_line *cfg, int leve
 		}
 	}
 
+	zbx_free(cfg_options_read);
+
 	return SUCCEED;
 cannot_open:
 	if (ZBX_CFG_FILE_REQUIRED != optional)
@@ -612,6 +631,8 @@ unknown_parameter:
 missing_mandatory:
 	zbx_error("missing mandatory parameter \"%s\" in config file \"%s\"", cfg[i].parameter, cfg_file);
 error:
+	zbx_free(cfg_options_read);
+
 	if (0 == noexit)
 		exit(EXIT_FAILURE);