1 files changed, 8 insertions, 4 deletions
diff --git a/luni/src/main/java/java/net/URISyntaxException.java b/luni/src/main/java/java/net/URISyntaxException.java
index e08f444..957ea31 100644
--- a/luni/src/main/java/java/net/URISyntaxException.java
+++ b/luni/src/main/java/java/net/URISyntaxException.java
@@ -49,8 +49,10 @@ public class URISyntaxException extends Exception {
     public URISyntaxException(String input, String reason, int index) {
         super(reason);
 
-        if (input == null || reason == null) {
-            throw new NullPointerException();
+        if (input == null) {
+            throw new NullPointerException("input == null");
+        } else if (reason == null) {
+            throw new NullPointerException("reason == null");
         }
 
         if (index < -1) {
@@ -76,8 +78,10 @@ public class URISyntaxException extends Exception {
     public URISyntaxException(String input, String reason) {
         super(reason);
 
-        if (input == null || reason == null) {
-            throw new NullPointerException();
+        if (input == null) {
+            throw new NullPointerException("input == null");
+        } else if (reason == null) {
+            throw new NullPointerException("reason == null");
         }
 
         this.input = input;