@@ -24,8 +24,13 @@
 
 /**
  * <p>
- * Use on methods in {@link SharedPref} annotated class. The generated method
- * will return an empty {@link java.util.Set} of Strings by default.
+ * Use on methods in {@link SharedPref} annotated class to specified the default
+ * value of this preference.
+ * </p>
+ * <p>
+ * The annotation value must be a <code>String[]</code>. The generated method
+ * will return a {@link java.util.Set Set&lt;String&gt;} containing the values of the
+ * given array.
  * </p>
  * <p>
  * The key of the preference will be the method name by default. This can be
 
@@ -54,4 +54,10 @@ public interface SomePrefs {
 
 	@DefaultStringSet({"a", "b", "c"})
 	Set<String> setWithDefault();
+
+	@DefaultStringSet("")
+	Set<String> emtpyString();
+
+	@DefaultStringSet({})
+	Set<String> emtpyStringSet();
 }
@@ -264,11 +264,15 @@ private IJExpression createFieldMethod(SharedPrefHolder holder, ExecutableElemen
 				Set<String> arrayValues = new HashSet<>(Arrays.asList((String[]) value));
 				value = arrayValues;
 
-				JInvocation arrayAsList = getClasses().ARRAYS.staticInvoke("asList");
-				for (String arrayValue : arrayValues) {
-					arrayAsList.arg(lit(arrayValue));
+				if (arrayValues.isEmpty()) {
+					defaultValueExpr = newEmptyStringHashSet();
+				} else {
+					JInvocation arrayAsList = getClasses().ARRAYS.staticInvoke("asList");
+					for (String arrayValue : arrayValues) {
+						arrayAsList.arg(lit(arrayValue));
+					}
+					defaultValueExpr = JExpr._new(getClasses().HASH_SET.narrow(getClasses().STRING)).arg(arrayAsList);
 				}
-				defaultValueExpr = JExpr._new(getClasses().HASH_SET.narrow(getClasses().STRING)).arg(arrayAsList);
 			} else {
 				defaultValueExpr = newEmptyStringHashSet();
 			}