diff --git a/src/cpu/x86/smm/smm_module_handler.c b/src/cpu/x86/smm/smm_module_handler.c
index d9f64204d6..8bcda32b33 100644
--- a/src/cpu/x86/smm/smm_module_handler.c
+++ b/src/cpu/x86/smm/smm_module_handler.c
@@ -226,6 +226,7 @@ void __weak southbridge_smi_handler(void) {}
 void __weak mainboard_smi_gpi(u32 gpi_sts) {}
 int __weak mainboard_smi_apmc(u8 data) { return 0; }
 void __weak mainboard_smi_sleep(u8 slp_typ) {}
+void __weak mainboard_smi_sleep_finalize(u8 slp_typ) {}
 void __weak mainboard_smi_finalize(void) {}
 
 void __weak smm_soc_early_init(void) {}
diff --git a/src/include/cpu/x86/smm.h b/src/include/cpu/x86/smm.h
index b552d33b5a..8c41623817 100644
--- a/src/include/cpu/x86/smm.h
+++ b/src/include/cpu/x86/smm.h
@@ -61,6 +61,7 @@ void southbridge_smi_handler(void);
 void mainboard_smi_gpi(u32 gpi_sts);
 int  mainboard_smi_apmc(u8 data);
 void mainboard_smi_sleep(u8 slp_typ);
+void mainboard_smi_sleep_finalize(u8 slp_typ);
 void mainboard_smi_finalize(void);
 int mainboard_set_smm_log_level(void);
 
diff --git a/src/soc/intel/common/block/smm/smihandler.c b/src/soc/intel/common/block/smm/smihandler.c
index 59489a4f03..cd78de26c3 100644
--- a/src/soc/intel/common/block/smm/smihandler.c
+++ b/src/soc/intel/common/block/smm/smihandler.c
@@ -220,6 +220,9 @@ void smihandler_southbridge_sleep(
 		break;
 	}
 
+	/* Allow mainboard to restore wake sources (e.g. for S5 WOL). */
+	mainboard_smi_sleep_finalize(slp_typ);
+
 	/*
 	 * Write back to the SLP register to cause the originally intended
 	 * event again. We need to set BIT13 (SLP_EN) though to make the