diff --git a/src/java/org/apache/commons/lang/Validate.java b/src/java/org/apache/commons/lang/Validate.java
index d5d14597e..a565da3f4 100644
--- a/src/java/org/apache/commons/lang/Validate.java
+++ b/src/java/org/apache/commons/lang/Validate.java
@@ -451,7 +451,7 @@ public static void noNullElements(Object[] array) {
      */
     public static void noNullElements(Collection collection, String message) {
         Validate.notNull(collection);
-        for (Iterator it = collection.iterator(); it.hasNext();) {
+        for (Iterator<?> it = collection.iterator(); it.hasNext();) {
             if (it.next() == null) {
                 throw new IllegalArgumentException(message);
             }
@@ -478,7 +478,7 @@ public static void noNullElements(Collection collection, String message) {
     public static void noNullElements(Collection collection) {
         Validate.notNull(collection);
         int i = 0;
-        for (Iterator it = collection.iterator(); it.hasNext(); i++) {
+        for (Iterator<?> it = collection.iterator(); it.hasNext(); i++) {
             if (it.next() == null) {
                 throw new IllegalArgumentException("The validated collection contains null element at index: " + i);
             }
@@ -502,7 +502,7 @@ public static void noNullElements(Collection collection) {
     public static void allElementsOfType(Collection collection, Class clazz, String message) {
         Validate.notNull(collection);
         Validate.notNull(clazz);
-        for (Iterator it = collection.iterator(); it.hasNext(); ) {
+        for (Iterator<?> it = collection.iterator(); it.hasNext(); ) {
             if (clazz.isInstance(it.next()) == false) {
                 throw new IllegalArgumentException(message);
             }
@@ -533,7 +533,7 @@ public static void allElementsOfType(Collection collection, Class clazz) {
         Validate.notNull(collection);
         Validate.notNull(clazz);
         int i = 0;
-        for (Iterator it = collection.iterator(); it.hasNext(); i++) {
+        for (Iterator<?> it = collection.iterator(); it.hasNext(); i++) {
             if (clazz.isInstance(it.next()) == false) {
                 throw new IllegalArgumentException("The validated collection contains an element not of type "
                     + clazz.getName() + " at index: " + i);
diff --git a/src/java/org/apache/commons/lang/math/NumberRange.java b/src/java/org/apache/commons/lang/math/NumberRange.java
index beff6f8f3..64f4e9160 100644
--- a/src/java/org/apache/commons/lang/math/NumberRange.java
+++ b/src/java/org/apache/commons/lang/math/NumberRange.java
@@ -67,7 +67,7 @@ public NumberRange(Number num) {
         if (num == null) {
             throw new IllegalArgumentException("The number must not be null");
         }
-        if (num instanceof Comparable == false) {
+        if (num instanceof Comparable<?> == false) {
             throw new IllegalArgumentException("The number must implement Comparable");
         }
         if (num instanceof Double && ((Double) num).isNaN()) {
@@ -106,7 +106,7 @@ public NumberRange(Number num1, Number num2) {
         if (num1.getClass() != num2.getClass()) {
             throw new IllegalArgumentException("The numbers must be of the same type");
         }
-        if (num1 instanceof Comparable == false) {
+        if (num1 instanceof Comparable<?> == false) {
             throw new IllegalArgumentException("The numbers must implement Comparable");
         }
         if (num1 instanceof Double) {