diff --git a/nx/include/switch/services/nifm.h b/nx/include/switch/services/nifm.h
index 1f190100..30a71e8f 100644
--- a/nx/include/switch/services/nifm.h
+++ b/nx/include/switch/services/nifm.h
@@ -229,6 +229,14 @@ Result nifmIsAnyForegroundRequestAccepted(bool* out);
 Result nifmPutToSleep(void);
 Result nifmWakeUp(void);
 
+/**
+ * @brief SetWowlDelayedWakeTime
+ * @note Only available with ::NifmServiceType_System or ::NifmServiceType_Admin.
+ * @note Only available on [9.0.0+].
+ * @param[in] val Input value.
+ */
+Result nifmSetWowlDelayedWakeTime(s32 val);
+
 ///@name IRequest
 ///@{
 
diff --git a/nx/source/services/nifm.c b/nx/source/services/nifm.c
index f40fa39d..65f37efe 100644
--- a/nx/source/services/nifm.c
+++ b/nx/source/services/nifm.c
@@ -319,6 +319,13 @@ Result nifmWakeUp(void) {
     return _nifmCmdNoIO(&g_nifmIGS, 24);
 }
 
+Result nifmSetWowlDelayedWakeTime(s32 val) {
+    if (hosversionBefore(9,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
+    return _nifmCmdInU32NoOut(&g_nifmIGS, (u32)val, 43);
+}
+
 // IRequest
 
 void nifmRequestClose(NifmRequest* r) {