diff --git a/config.c b/config.c
index bc011e5..dc7269a 100644
--- a/config.c
+++ b/config.c
@@ -216,6 +216,7 @@ struct config_item config_tab[] = {
 	GLOB_ITEM_STR("productDescription", ";;"),
 	PORT_ITEM_STR("ptp_dst_mac", "01:1B:19:00:00:00"),
 	PORT_ITEM_STR("p2p_dst_mac", "01:80:C2:00:00:0E"),
+	GLOB_ITEM_STR("revisionData", ";;"),
 	GLOB_ITEM_INT("sanity_freq_limit", 200000000, 0, INT_MAX),
 	GLOB_ITEM_INT("slaveOnly", 0, 0, 1),
 	GLOB_ITEM_DBL("step_threshold", 0.0, 0.0, DBL_MAX),
@@ -459,13 +460,7 @@ static enum parser_result parse_global_setting(const char *option,
 	if (r != NOT_PARSED)
 		return r;
 
-	if (!strcmp(option, "revisionData")) {
-		if (count_char(value, ';') != 2)
-			return BAD_VALUE;
-		if (static_ptp_text_set(&cfg->dds.clock_desc.revisionData, value) != 0)
-			return BAD_VALUE;
-
-	} else if (!strcmp(option, "userDescription")) {
+	if (!strcmp(option, "userDescription")) {
 		if (static_ptp_text_set(&cfg->dds.clock_desc.userDescription, value) != 0)
 			return BAD_VALUE;
 
diff --git a/ptp4l.c b/ptp4l.c
index 2b96564..dd60b06 100644
--- a/ptp4l.c
+++ b/ptp4l.c
@@ -44,11 +44,6 @@ static struct config cfg_settings = {
 
 	.dds = {
 		.clock_desc = {
-			.revisionData = {
-				.max_symbols = 32,
-				.text = ";;",
-				.length = 2,
-			},
 			.userDescription      = { .max_symbols = 128 },
 			.manufacturerIdentity = { 0, 0, 0 },
 		},
@@ -210,6 +205,7 @@ int main(int argc, char *argv[])
 		config_get_int(cfg, NULL, "offsetScaledLogVariance");
 
 	dds->clock_desc.productDescription.max_symbols = 64;
+	dds->clock_desc.revisionData.max_symbols = 32;
 
 	tmp = config_get_string(cfg, NULL, "productDescription");
 	if (count_char(tmp, ';') != 2 ||
@@ -217,6 +213,12 @@ int main(int argc, char *argv[])
 		fprintf(stderr, "invalid productDescription '%s'.\n", tmp);
 		return -1;
 	}
+	tmp = config_get_string(cfg, NULL, "revisionData");
+	if (count_char(tmp, ';') != 2 ||
+	    static_ptp_text_set(&dds->clock_desc.revisionData, tmp)) {
+		fprintf(stderr, "invalid revisionData '%s'.\n", tmp);
+		return -1;
+	}
 
 	ds->domainNumber = config_get_int(cfg, NULL, "domainNumber");