diff --git a/core/camel-api/src/main/java/org/apache/camel/catalog/EndpointValidationResult.java b/core/camel-api/src/main/java/org/apache/camel/catalog/EndpointValidationResult.java
index c674f91556154..3bfbec6b2ce80 100644
--- a/core/camel-api/src/main/java/org/apache/camel/catalog/EndpointValidationResult.java
+++ b/core/camel-api/src/main/java/org/apache/camel/catalog/EndpointValidationResult.java
@@ -59,9 +59,7 @@ public void addLenient(String name) {
         if (lenient == null) {
             lenient = new LinkedHashSet<>();
         }
-        if (!lenient.contains(name)) {
-            lenient.add(name);
-        }
+        lenient.add(name);
     }
 
     public void addNotConsumerOnly(String name) {
diff --git a/core/camel-api/src/main/java/org/apache/camel/catalog/PropertiesValidationResult.java b/core/camel-api/src/main/java/org/apache/camel/catalog/PropertiesValidationResult.java
index d6303663a01a2..115a420113a40 100644
--- a/core/camel-api/src/main/java/org/apache/camel/catalog/PropertiesValidationResult.java
+++ b/core/camel-api/src/main/java/org/apache/camel/catalog/PropertiesValidationResult.java
@@ -128,9 +128,7 @@ public void addDeprecated(String name) {
         if (deprecated == null) {
             deprecated = new LinkedHashSet<>();
         }
-        if (!deprecated.contains(name)) {
-            deprecated.add(name);
-        }
+        deprecated.add(name);
     }
 
     private String computeErrors(String value) {
diff --git a/core/camel-core/src/test/java/org/apache/camel/util/CaseInsensitiveMapTest.java b/core/camel-core/src/test/java/org/apache/camel/util/CaseInsensitiveMapTest.java
index 68af18d0531b1..27cb86dcd9b26 100644
--- a/core/camel-core/src/test/java/org/apache/camel/util/CaseInsensitiveMapTest.java
+++ b/core/camel-core/src/test/java/org/apache/camel/util/CaseInsensitiveMapTest.java
@@ -311,11 +311,11 @@ public void testRomeks() {
         assertTrue(map.containsKey("foo"));
         assertTrue(map.containsKey("FOO"));
 
-        assertTrue(map.keySet().contains("FOO"));
-        assertTrue(map.keySet().contains("FoO"));
-        assertTrue(map.keySet().contains("Foo"));
-        assertTrue(map.keySet().contains("foo"));
-        assertTrue(map.keySet().contains("fOO"));
+        assertTrue(map.containsKey("FOO"));
+        assertTrue(map.containsKey("FoO"));
+        assertTrue(map.containsKey("Foo"));
+        assertTrue(map.containsKey("foo"));
+        assertTrue(map.containsKey("fOO"));
 
         map.put("FOO", "cake");
         assertEquals(1, map.size());
@@ -335,7 +335,7 @@ public void testRomeksUsingRegularHashMap() {
         assertTrue(map.containsKey("foo"));
         assertFalse(map.containsKey("FOO"));
 
-        assertFalse(map.keySet().contains("FOO"));
+        assertFalse(map.containsKey("FOO"));
 
         map.put("FOO", "cake");
         assertEquals(2, map.size());