diff --git a/src/main/java/de/thm/arsnova/domain/QuestionBasedLearningProgress.java b/src/main/java/de/thm/arsnova/domain/QuestionBasedLearningProgress.java
index 327174e04eaee30eec92df3a0f7a9f8a1c9a97f9..f9284eaebfa2029309cfb64fc3e88161cec8e643 100644
--- a/src/main/java/de/thm/arsnova/domain/QuestionBasedLearningProgress.java
+++ b/src/main/java/de/thm/arsnova/domain/QuestionBasedLearningProgress.java
@@ -22,8 +22,8 @@ import de.thm.arsnova.entities.User;
 import de.thm.arsnova.entities.transport.LearningProgressValues;
 
 /**
- * Calculates learning progress based on overall correctness of an answer. A question is answered correctly iff the
- * maximum question value possible has been achieved.
+ * Calculates learning progress based on overall correctness of an answer. A question is answered correctly if and
+ * only if the maximum question value possible has been achieved.
  */
 public class QuestionBasedLearningProgress extends VariantLearningProgress {