diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index 05c815eb3..d9320fa02 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -5311,6 +5311,11 @@ scriptwait:
 			pc++;
 			goto scriptwait;
 
+		case PCD_SCRIPTWAITNAMED:
+			statedata = -FName(FBehavior::StaticLookupString(STACK(1)));
+			sp--;
+			goto scriptwait;
+
 		case PCD_CLEARLINESPECIAL:
 			if (activationline != NULL)
 			{
diff --git a/src/p_acs.h b/src/p_acs.h
index da363958b..7a432815b 100644
--- a/src/p_acs.h
+++ b/src/p_acs.h
@@ -598,8 +598,9 @@ public:
 		PCD_STRCPYTOMAPCHRANGE,	// [FDARI] input range (copy string to all/part of array)
 		PCD_STRCPYTOWORLDCHRANGE,
 		PCD_STRCPYTOGLOBALCHRANGE,
-		PCD_PUSHFUNCTION,
-/*360*/	PCD_CALLSTACK,
+		PCD_PUSHFUNCTION,		// from Eternity
+/*360*/	PCD_CALLSTACK,			// from Eternity
+		PCD_SCRIPTWAITNAMED,
 
 /*361*/	PCODE_COMMAND_COUNT
 	};