diff --git a/docs/src/main/asciidoc/optaplanner.adoc b/docs/src/main/asciidoc/optaplanner.adoc
index abac11775db43..1de048f099bce 100644
--- a/docs/src/main/asciidoc/optaplanner.adoc
+++ b/docs/src/main/asciidoc/optaplanner.adoc
@@ -456,7 +456,8 @@ public class TimeTableConstraintProvider implements ConstraintProvider {
                         // ... and the pair is unique (different id, no reverse pairs) ...
                         Joiners.lessThan(Lesson::getId))
                 // ... then penalize each pair with a hard weight.
-                .penalize("Room conflict", HardSoftScore.ONE_HARD);
+                .penalize(HardSoftScore.ONE_HARD)
+                .asConstraint("Room conflict");
     }
 
     Constraint teacherConflict(ConstraintFactory constraintFactory) {
@@ -466,7 +467,8 @@ public class TimeTableConstraintProvider implements ConstraintProvider {
                         Joiners.equal(Lesson::getTimeslot),
                         Joiners.equal(Lesson::getTeacher),
                         Joiners.lessThan(Lesson::getId))
-                .penalize("Teacher conflict", HardSoftScore.ONE_HARD);
+                .penalize(HardSoftScore.ONE_HARD)
+                .asConstraint(""Teacher conflict");
     }
 
     Constraint studentGroupConflict(ConstraintFactory constraintFactory) {
@@ -476,7 +478,8 @@ public class TimeTableConstraintProvider implements ConstraintProvider {
                         Joiners.equal(Lesson::getTimeslot),
                         Joiners.equal(Lesson::getStudentGroup),
                         Joiners.lessThan(Lesson::getId))
-                .penalize("Student group conflict", HardSoftScore.ONE_HARD);
+                .penalize(HardSoftScore.ONE_HARD)
+                .asConstraint(""Student group conflict");
     }
 
 }