diff --git a/src/test/java/com/github/prominence/openweathermap/api/model/weather/RainUnitTest.java b/src/test/java/com/github/prominence/openweathermap/api/model/weather/RainUnitTest.java
index f0d02c0..94511aa 100644
--- a/src/test/java/com/github/prominence/openweathermap/api/model/weather/RainUnitTest.java
+++ b/src/test/java/com/github/prominence/openweathermap/api/model/weather/RainUnitTest.java
@@ -59,17 +59,17 @@ public class RainUnitTest {
         rain.setThreeHourRainLevel(33.5);
 
         Assert.assertNotNull(rain.toString());
-        Assert.assertEquals("unknown", rain.toString());
+        Assert.assertNotEquals("unknown", rain.toString());
 
         rain.setOneHourRainLevel(22.2);
 
         Assert.assertNotNull(rain.toString());
-        Assert.assertEquals("unknown", rain.toString());
+        Assert.assertNotEquals("unknown", rain.toString());
 
         rain.setThreeHourRainLevel(null);
 
         Assert.assertNotNull(rain.toString());
-        Assert.assertEquals("unknown", rain.toString());
+        Assert.assertNotEquals("unknown", rain.toString());
     }
 
     @Test
diff --git a/src/test/java/com/github/prominence/openweathermap/api/model/weather/SnowUnitTest.java b/src/test/java/com/github/prominence/openweathermap/api/model/weather/SnowUnitTest.java
index e1936d0..7e2ccc2 100644
--- a/src/test/java/com/github/prominence/openweathermap/api/model/weather/SnowUnitTest.java
+++ b/src/test/java/com/github/prominence/openweathermap/api/model/weather/SnowUnitTest.java
@@ -59,17 +59,17 @@ public class SnowUnitTest {
         snow.setThreeHourSnowLevel(33.5);
 
         Assert.assertNotNull(snow.toString());
-        Assert.assertEquals("unknown", snow.toString());
+        Assert.assertNotEquals("unknown", snow.toString());
 
         snow.setOneHourSnowLevel(22.2);
 
         Assert.assertNotNull(snow.toString());
-        Assert.assertEquals("unknown", snow.toString());
+        Assert.assertNotEquals("unknown", snow.toString());
 
         snow.setThreeHourSnowLevel(null);
 
         Assert.assertNotNull(snow.toString());
-        Assert.assertEquals("unknown", snow.toString());
+        Assert.assertNotEquals("unknown", snow.toString());
     }
 
     @Test
diff --git a/src/test/java/com/github/prominence/openweathermap/api/model/weather/WeatherUnitTest.java b/src/test/java/com/github/prominence/openweathermap/api/model/weather/WeatherUnitTest.java
index d9934c6..75537bb 100644
--- a/src/test/java/com/github/prominence/openweathermap/api/model/weather/WeatherUnitTest.java
+++ b/src/test/java/com/github/prominence/openweathermap/api/model/weather/WeatherUnitTest.java
@@ -215,7 +215,7 @@ public class WeatherUnitTest {
 
         two.setDescription("112");
 
-        Assert.assertEquals(one.hashCode(), two.hashCode());
+        Assert.assertNotEquals(one.hashCode(), two.hashCode());
     }
 
     @Test