diff --git a/extras/conf/udb/Includes/SRB222_linedefs.cfg b/extras/conf/udb/Includes/SRB222_linedefs.cfg
index bc1f43e57..0ff07aa39 100644
--- a/extras/conf/udb/Includes/SRB222_linedefs.cfg
+++ b/extras/conf/udb/Includes/SRB222_linedefs.cfg
@@ -1693,6 +1693,31 @@ udmf
 				type = 13;
 			}
 		}
+
+		465
+		{
+			title = "Set Linedef Executor Delay";
+			prefix = "(465)";
+			arg0
+			{
+				title = "Linedef tag";
+				type = 15;
+			}
+			arg1
+			{
+				title = "Value";
+			}
+			arg2
+			{
+				title = "Set/add?";
+				type = 11;
+				enum
+				{
+					0 = "Set";
+					1 = "Add";
+				}
+			}
+		}
 	}
 
 	light
diff --git a/extras/conf/udb/Includes/SRB222_misc.cfg b/extras/conf/udb/Includes/SRB222_misc.cfg
index bf8768d2a..68629149e 100644
--- a/extras/conf/udb/Includes/SRB222_misc.cfg
+++ b/extras/conf/udb/Includes/SRB222_misc.cfg
@@ -242,6 +242,11 @@ universalfields
 			type = 2;
 			default = "";
 		}
+		executordelay
+		{
+			type = 0;
+			default = 0;
+		}
 	}
 
 	sidedef
diff --git a/src/p_spec.c b/src/p_spec.c
index 475b50c4c..537dc1afe 100644
--- a/src/p_spec.c
+++ b/src/p_spec.c
@@ -4036,6 +4036,23 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			}
 			break;
 
+		case 465: // Set linedef executor delay
+			{
+				INT32 linenum;
+
+				if (!udmf)
+					break;
+
+				for (linenum = -1; (linenum = P_FindLineFromTag(line->args[0], linenum)) >= 0 ;)
+				{
+					if (line->args[2])
+						lines[linenum].executordelay += line->args[1];
+					else
+						lines[linenum].executordelay = line->args[1];
+				}
+			}
+			break;
+
 #ifdef POLYOBJECTS
 		case 480: // Polyobj_DoorSlide
 		case 481: // Polyobj_DoorSwing