diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index e74533fca..a4af662d3 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -68,7 +68,8 @@ The <action> type attribute can be add,update,fix,remove.
     <action issue="LANG-1394" type="add" dev="ggregory" due-to="Sebb, Gary Gregory">org.apache.commons.lang3.SystemUtils should not write to System.err.</action>   
     <action issue="LANG-1238" type="add" dev="ggregory" due-to="Christopher Cordeiro, Gary Gregory, Bruno P. Kinoshita, Oleg Chubaryov">Add RegexUtils class instead of overloading methods in StringUtils that take a regex to take precompiled Pattern.</action>
     <action issue="LANG-1290" type="add" dev="ggregory" due-to="Jochen Schalanda">StringUtils.join() with support for List&lt;?> with configurable start/end indices.</action>
-    <action issue="LANG-1392" type="add" dev="pschumacher" due-to="Jeff Nelson">Methods for getting first non empty or non blank value</action> 
+    <action issue="LANG-1392" type="add" dev="pschumacher" due-to="Jeff Nelson">Methods for getting first non empty or non blank value</action>
+    <action issue="LANG-1405" type="update" dev="ggregory" due-to="Lars Grefer">Remove checks for java versions below the minimum supported one</action>
   </release>
 
   <release version="3.7" date="2017-11-04" description="New features and bug fixes. Requires Java 7, supports Java 8, 9, 10.">
diff --git a/src/main/java/org/apache/commons/lang3/ClassUtils.java b/src/main/java/org/apache/commons/lang3/ClassUtils.java
index 799fa1c8b..be9f0ddb5 100644
--- a/src/main/java/org/apache/commons/lang3/ClassUtils.java
+++ b/src/main/java/org/apache/commons/lang3/ClassUtils.java
@@ -641,7 +641,7 @@ public static List<String> convertClassesToClassNames(final List<Class<?>> class
      * @return {@code true} if assignment possible
      */
     public static boolean isAssignable(final Class<?>[] classArray, final Class<?>... toClassArray) {
-        return isAssignable(classArray, toClassArray, SystemUtils.isJavaVersionAtLeast(JavaVersion.JAVA_1_5));
+        return isAssignable(classArray, toClassArray, true);
     }
 
     /**
@@ -757,7 +757,7 @@ public static boolean isPrimitiveWrapper(final Class<?> type) {
      * @return {@code true} if assignment possible
      */
     public static boolean isAssignable(final Class<?> cls, final Class<?> toClass) {
-        return isAssignable(cls, toClass, SystemUtils.isJavaVersionAtLeast(JavaVersion.JAVA_1_5));
+        return isAssignable(cls, toClass, true);
     }
 
     /**