diff --git a/clients/cli/generate-docs-nm-settings-nmcli.xml.in b/clients/cli/generate-docs-nm-settings-nmcli.xml.in
index 5bae8ff9ef..09eaad9f71 100644
--- a/clients/cli/generate-docs-nm-settings-nmcli.xml.in
+++ b/clients/cli/generate-docs-nm-settings-nmcli.xml.in
@@ -647,7 +647,7 @@
                   alias="gw4"
                   description="The gateway associated with this configuration. This is only meaningful if "addresses" is also set. The gateway's main purpose is to control the next hop of the standard default route on the device. Hence, the gateway property conflicts with "never-default" and will be automatically dropped if the IP configuration is set to never-default. As an alternative to set the gateway, configure a static default route with /0 as prefix length." />
         <property name="routes"
-                  description="Array of IP routes." />
+                  description="A list of IPv4 destination addresses, prefix length, optional IPv4 next hop addresses, optional route metric, optional attribute. The valid syntax is: &quot;ip[/prefix] [next-hop] [metric] [attribute=val]...[,ip[/prefix]...]&quot;. For example &quot;192.0.2.0/24 10.1.1.1 77, 198.51.100.0/24&quot;." />
         <property name="route-metric"
                   description="The default metric for routes that don&apos;t explicitly specify a metric. The default value -1 means that the metric is chosen automatically based on the device type. The metric applies to dynamic routes, manual (static) routes that don&apos;t have an explicit metric setting, address prefix routes, and the default route. Note that for IPv6, the kernel accepts zero (0) but coerces it to 1024 (user default). Hence, setting this property to zero effectively mean setting it to 1024. For IPv4, zero is a regular value for the metric." />
         <property name="route-table"
diff --git a/clients/common/settings-docs.h.in b/clients/common/settings-docs.h.in
index 9cd2609d23..425eb9a6ac 100644
--- a/clients/common/settings-docs.h.in
+++ b/clients/common/settings-docs.h.in
@@ -248,7 +248,7 @@
 #define DESCRIBE_DOC_NM_SETTING_IP4_CONFIG_NEVER_DEFAULT N_("If TRUE, this connection will never be the default connection for this IP type, meaning it will never be assigned the default route by NetworkManager.")
 #define DESCRIBE_DOC_NM_SETTING_IP4_CONFIG_ROUTE_METRIC N_("The default metric for routes that don't explicitly specify a metric. The default value -1 means that the metric is chosen automatically based on the device type. The metric applies to dynamic routes, manual (static) routes that don't have an explicit metric setting, address prefix routes, and the default route. Note that for IPv6, the kernel accepts zero (0) but coerces it to 1024 (user default). Hence, setting this property to zero effectively mean setting it to 1024. For IPv4, zero is a regular value for the metric.")
 #define DESCRIBE_DOC_NM_SETTING_IP4_CONFIG_ROUTE_TABLE N_("Enable policy routing (source routing) and set the routing table used when adding routes. This affects all routes, including device-routes, IPv4LL, DHCP, SLAAC, default-routes and static routes. But note that static routes can individually overwrite the setting by explicitly specifying a non-zero routing table. If the table setting is left at zero, it is eligible to be overwritten via global configuration. If the property is zero even after applying the global configuration value, policy routing is disabled for the address family of this connection. Policy routing disabled means that NetworkManager will add all routes to the main table (except static routes that explicitly configure a different table). Additionally, NetworkManager will not delete any extraneous routes from tables except the main table. This is to preserve backward compatibility for users who manage routing tables outside of NetworkManager.")
-#define DESCRIBE_DOC_NM_SETTING_IP4_CONFIG_ROUTES N_("Array of IP routes.")
+#define DESCRIBE_DOC_NM_SETTING_IP4_CONFIG_ROUTES N_("A list of IPv4 destination addresses, prefix length, optional IPv4 next hop addresses, optional route metric, optional attribute. The valid syntax is: \"ip[/prefix] [next-hop] [metric] [attribute=val]...[,ip[/prefix]...]\". For example \"192.0.2.0/24 10.1.1.1 77, 198.51.100.0/24\".")
 #define DESCRIBE_DOC_NM_SETTING_IP6_CONFIG_ADDR_GEN_MODE N_("Configure method for creating the address for use with RFC4862 IPv6 Stateless Address Autoconfiguration. The permitted values are: NM_SETTING_IP6_CONFIG_ADDR_GEN_MODE_EUI64 (0) or NM_SETTING_IP6_CONFIG_ADDR_GEN_MODE_STABLE_PRIVACY (1). If the property is set to EUI64, the addresses will be generated using the interface tokens derived from hardware address. This makes the host part of the address to stay constant, making it possible to track host's presence when it changes networks. The address changes when the interface hardware is replaced. The value of stable-privacy enables use of cryptographically secure hash of a secret host-specific key along with the connection's stable-id and the network address as specified by RFC7217. This makes it impossible to use the address track host's presence, and makes the address stable when the network interface hardware is replaced. On D-Bus, the absence of an addr-gen-mode setting equals enabling stable-privacy. For keyfile plugin, the absence of the setting on disk means EUI64 so that the property doesn't change on upgrade from older versions. Note that this setting is distinct from the Privacy Extensions as configured by \"ip6-privacy\" property and it does not affect the temporary addresses configured with this option.")
 #define DESCRIBE_DOC_NM_SETTING_IP6_CONFIG_ADDRESSES N_("Array of IP addresses.")
 #define DESCRIBE_DOC_NM_SETTING_IP6_CONFIG_DAD_TIMEOUT N_("Timeout in milliseconds used to check for the presence of duplicate IP addresses on the network.  If an address conflict is detected, the activation will fail.  A zero value means that no duplicate address detection is performed, -1 means the default value (either configuration ipvx.dad-timeout override or zero).  A value greater than zero is a timeout in milliseconds. The property is currently implemented only for IPv4.")
diff --git a/src/libnm-core-impl/nm-setting-ip4-config.c b/src/libnm-core-impl/nm-setting-ip4-config.c
index e08bc52e19..b19d82e618 100644
--- a/src/libnm-core-impl/nm-setting-ip4-config.c
+++ b/src/libnm-core-impl/nm-setting-ip4-config.c
@@ -998,6 +998,15 @@ nm_setting_ip4_config_class_init(NMSettingIP4ConfigClass *klass)
      *   property.)
      * ---end---
      */
+    /* ---nmcli---
+     * property: routes
+     * format: a comma separated list of routes
+     * description: A list of IPv4 destination addresses, prefix length, optional IPv4
+     * next hop addresses, optional route metric, optional attribute. The valid syntax is:
+     * "ip[/prefix] [next-hop] [metric] [attribute=val]...[,ip[/prefix]...]". For example
+     * "192.0.2.0/24 10.1.1.1 77, 198.51.100.0/24".
+     * ---end---
+     */
     _nm_properties_override_gobj(
         properties_override,
         g_object_class_find_property(G_OBJECT_CLASS(setting_class), NM_SETTING_IP_CONFIG_ROUTES),