diff --git a/build.gradle b/build.gradle
index 213590c..3210a17 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,7 +14,7 @@ dependencies {
 allprojects {
     sourceCompatibility = 1.7
     targetCompatibility = 1.7
-    version = '0.2.2'
+    version = '0.2.3'
 }
 
 jacocoTestReport {
diff --git a/src/main/java/com/github/mproberts/rxtools/SubjectMap.java b/src/main/java/com/github/mproberts/rxtools/SubjectMap.java
index cb7a631..90a68a6 100644
--- a/src/main/java/com/github/mproberts/rxtools/SubjectMap.java
+++ b/src/main/java/com/github/mproberts/rxtools/SubjectMap.java
@@ -230,15 +230,15 @@ public void call(Subject<V, V> subject)
      * to get will return a new observable and attempt to fault the value in
      *
      * @param key key with which the specified value is to be associated
-     * @param exception exception to be sent to the specified observable
+     * @param throwable throwable to be sent to the specified observable
      */
-    public void onError(K key, final Exception exception)
+    public void onError(K key, final Throwable throwable)
     {
         emitUpdate(key, new Action1<Subject<V, V>>() {
             @Override
             public void call(Subject<V, V> subject)
             {
-                subject.onError(exception);
+                subject.onError(throwable);
             }
         }, true);
     }