diff --git a/d2graph/d2graph.go b/d2graph/d2graph.go
index f80a35b21..98973e554 100644
--- a/d2graph/d2graph.go
+++ b/d2graph/d2graph.go
@@ -1024,8 +1024,11 @@ func (obj *Object) GetDefaultSize(mtexts []*d2target.MText, ruler *textmeasure.R
 			}
 			maxTypeWidth = go2.Max(maxTypeWidth, typeDims.Width)
 
-			if c.Constraint != "" {
-				// covers UNQ constraint with padding
+			if c.Constraint == "primary_key_foreign_key" {
+				// covers "PK FK" constraint with padding
+				constraintWidth = 80
+			} else if c.Constraint != "" && constraintWidth == 0 {
+				// covers remaining constraints with "UNQ" being the largest
 				constraintWidth = 60
 			}
 		}
diff --git a/d2target/sqltable.go b/d2target/sqltable.go
index 6ffbddf05..a10821a99 100644
--- a/d2target/sqltable.go
+++ b/d2target/sqltable.go
@@ -46,6 +46,8 @@ func (c SQLColumn) ConstraintAbbr() string {
 		return "PK"
 	case "foreign_key":
 		return "FK"
+	case "primary_key_foreign_key":
+		return "PK FK"
 	case "unique":
 		return "UNQ"
 	default: