diff --git a/tests/toranj/openthread-core-toranj-config-posix.h b/tests/toranj/openthread-core-toranj-config-posix.h
index 81916cf1f..a23939e1d 100644
--- a/tests/toranj/openthread-core-toranj-config-posix.h
+++ b/tests/toranj/openthread-core-toranj-config-posix.h
@@ -101,4 +101,6 @@
 
 #define OPENTHREAD_CONFIG_SRP_CLIENT_COUNTERS_ENABLE 0
 
+#define OPENTHREAD_CONFIG_OTNS_ENABLE 1
+
 #endif // OT_TORANJ_OPENTHREAD_CORE_TORANJ_CONFIG_POSIX_H_
diff --git a/tests/toranj/openthread-core-toranj-config-simulation.h b/tests/toranj/openthread-core-toranj-config-simulation.h
index c5febffa3..389e029c9 100644
--- a/tests/toranj/openthread-core-toranj-config-simulation.h
+++ b/tests/toranj/openthread-core-toranj-config-simulation.h
@@ -124,6 +124,6 @@
 
 #define OPENTHREAD_CONFIG_TREL_USE_HEAP_ENABLE 0
 
-#define OPENTHREAD_CONFIG_OTNS_ENABLE 1
+#define OPENTHREAD_CONFIG_OTNS_ENABLE 0
 
 #endif // OT_TORANJ_OPENTHREAD_CORE_TORANJ_CONFIG_SIMULATION_H_