diff --git a/docs/src/main/asciidoc/optaplanner.adoc b/docs/src/main/asciidoc/optaplanner.adoc
index dd16950334624..d0c2192d55f54 100644
--- a/docs/src/main/asciidoc/optaplanner.adoc
+++ b/docs/src/main/asciidoc/optaplanner.adoc
@@ -455,7 +455,8 @@ 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) {
@@ -465,7 +466,8 @@ 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) {
@@ -475,7 +477,8 @@ 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");
     }
 
 }