diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c
index 7d4e334503..5a4b7261bb 100644
--- a/src/udev/net/link-config.c
+++ b/src/udev/net/link-config.c
@@ -15,7 +15,6 @@
 #include "creds-util.h"
 #include "device-private.h"
 #include "device-util.h"
-#include "env-util.h"
 #include "escape.h"
 #include "ethtool-util.h"
 #include "fd-util.h"
@@ -1111,8 +1110,7 @@ int config_parse_udev_property(
                         continue;
                 }
 
-                /* The restriction for udev property is not clear. Let's apply the one for environment variable here. */
-                if (!env_assignment_is_valid(resolved)) {
+                if (!udev_property_assignment_is_valid(resolved)) {
                         log_syntax(unit, LOG_WARNING, filename, line, 0,
                                    "Invalid udev property, ignoring assignment: %s", word);
                         continue;
@@ -1181,8 +1179,7 @@ int config_parse_udev_property_name(
                         continue;
                 }
 
-                /* The restriction for udev property is not clear. Let's apply the one for environment variable here. */
-                if (!env_name_is_valid(resolved)) {
+                if (!udev_property_name_is_valid(resolved)) {
                         log_syntax(unit, LOG_WARNING, filename, line, 0,
                                    "Invalid udev property name, ignoring assignment: %s", resolved);
                         continue;
diff --git a/src/udev/udev-def.h b/src/udev/udev-def.h
index 9d9fc78247..ed231764bc 100644
--- a/src/udev/udev-def.h
+++ b/src/udev/udev-def.h
@@ -3,6 +3,8 @@
 
 #include <errno.h>
 
+#include "env-util.h"
+
 #define UDEV_NAME_SIZE   512
 #define UDEV_PATH_SIZE  1024
 #define UDEV_LINE_SIZE 16384
@@ -78,3 +80,9 @@ typedef enum UdevReloadFlags {
         UDEV_RELOAD_KILL_WORKERS     = 1u << (_UDEV_BUILTIN_MAX + 0),
         UDEV_RELOAD_RULES            = 1u << (_UDEV_BUILTIN_MAX + 1),
 } UdevReloadFlags;
+
+/* udev properties are conceptually close to environment variables. Let's validate names, values, and
+ * assignments in the same way. */
+#define udev_property_name_is_valid(x)       env_name_is_valid(x)
+#define udev_property_value_is_valid(x)      env_value_is_valid(x)
+#define udev_property_assignment_is_valid(x) env_assignment_is_valid(x)