diff --git a/arch/risc-v/src/esp32c3/esp32c3_rng.c b/arch/risc-v/src/esp32c3/esp32c3_rng.c
index 7a3d01c6891..b38bfd2333c 100644
--- a/arch/risc-v/src/esp32c3/esp32c3_rng.c
+++ b/arch/risc-v/src/esp32c3/esp32c3_rng.c
@@ -222,7 +222,7 @@ void devurandom_register(void)
 #ifndef CONFIG_DEV_RANDOM
   esp32c3_rng_initialize();
 #endif
-  register_driver("dev/urandom", &g_rngops, 0444, NULL);
+  register_driver("/dev/urandom", &g_rngops, 0444, NULL);
 }
 #endif
 
diff --git a/arch/xtensa/src/esp32/esp32_rng.c b/arch/xtensa/src/esp32/esp32_rng.c
index af968c4b959..07ec30c2478 100644
--- a/arch/xtensa/src/esp32/esp32_rng.c
+++ b/arch/xtensa/src/esp32/esp32_rng.c
@@ -222,7 +222,7 @@ void devurandom_register(void)
 #ifndef CONFIG_DEV_RANDOM
   esp32_rng_initialize();
 #endif
-  register_driver("dev/urandom", &g_rngops, 0444, NULL);
+  register_driver("/dev/urandom", &g_rngops, 0444, NULL);
 }
 #endif