diff --git a/src/thingdef/thingdef_expression.cpp b/src/thingdef/thingdef_expression.cpp
index 987a9806e6..0d6e009fd4 100644
--- a/src/thingdef/thingdef_expression.cpp
+++ b/src/thingdef/thingdef_expression.cpp
@@ -3147,6 +3147,7 @@ FxExpression *FxVMFunctionCall::Resolve(FCompileContext& ctx)
 		else if (rets[0] == TypeFloat64)	ValueType = VAL_Float;
 		else if (rets[0] == TypeAngle)		ValueType = VAL_Angle;
 		else if (rets[0] == TypeFixed)		ValueType = VAL_Fixed;
+		else if (rets[0] == TypeState)		ValueType = VAL_State;
 		else
 		{
 			ValueType = VAL_Int;
diff --git a/src/thingdef/thingdef_parse.cpp b/src/thingdef/thingdef_parse.cpp
index 93a1398504..255e2adafb 100644
--- a/src/thingdef/thingdef_parse.cpp
+++ b/src/thingdef/thingdef_parse.cpp
@@ -1040,6 +1040,14 @@ static void ParseActionDef (FScanner &sc, PClassActor *cls)
 	{
 		rets.Push(TypeSInt32);
 	}
+	else if (sc.CheckToken(TK_State))
+	{
+		rets.Push(TypeState);
+	}
+	else if (sc.CheckToken(TK_Float))
+	{
+		rets.Push(TypeFloat64);
+	}
 	sc.MustGetToken(TK_Identifier);
 	funcname = sc.String;
 	ParseFunctionDef(sc, cls, funcname, rets, VARF_Method | VARF_Action);