diff --git a/src/main/java/module-info.java b/src/main/java/module-info.java
index 35c4498..dc2c5d8 100644
--- a/src/main/java/module-info.java
+++ b/src/main/java/module-info.java
@@ -1,3 +1,7 @@
+/**
+ * JPMS module simpletimeapi.
+ * Describes API for ALDA Assignment SimpleTime.
+ */
 module simpletimeapi {
     exports simpletimeapi;
 }
diff --git a/src/main/java/simpletimeapi/Duration.java b/src/main/java/simpletimeapi/Duration.java
index ecc8a31..87445b1 100644
--- a/src/main/java/simpletimeapi/Duration.java
+++ b/src/main/java/simpletimeapi/Duration.java
@@ -55,7 +55,7 @@ public interface Duration extends Comparable<Duration> {
     /**
      * Equals method.
      * Hint: generate equals method together with hashCode.
-     * @param other
+     * @param other object
      * @return true if the value of this Duration is equal to the value of other Duration.
      */
     @Override
diff --git a/src/main/java/simpletimeapi/Time.java b/src/main/java/simpletimeapi/Time.java
index 25cd220..9fb2e04 100644
--- a/src/main/java/simpletimeapi/Time.java
+++ b/src/main/java/simpletimeapi/Time.java
@@ -115,7 +115,7 @@ default int asMinutes() {
     /**
      * Equals method.
      * Hint: generate equals method together with hashCode.
-     * @param other
+     * @param other object
      * @return true if the value of this Time is equal to the value of other Time.
      */
     @Override