diff --git a/redpen-core/src/main/java/cc/redpen/validator/sentence/SymbolWithSpaceValidator.java b/redpen-core/src/main/java/cc/redpen/validator/sentence/SymbolWithSpaceValidator.java
index c47aee576..131e246e3 100644
--- a/redpen-core/src/main/java/cc/redpen/validator/sentence/SymbolWithSpaceValidator.java
+++ b/redpen-core/src/main/java/cc/redpen/validator/sentence/SymbolWithSpaceValidator.java
@@ -25,6 +25,9 @@
 
 import java.util.Set;
 
+import static java.lang.Character.isLetterOrDigit;
+import static java.lang.Character.isWhitespace;
+
 /**
  * Validate symbol has before and after symbols. Needed spaces is depend on
  * the symbol and defined in DVCharacterTable.
@@ -51,14 +54,12 @@ private ValidationError validateSymbol(Sentence sentence, SymbolType symbolType)
         if (position != -1) {
             String key = "";
 
-            if (position > 0 && symbol.isNeedBeforeSpace()
-                    && !Character.isWhitespace(sentenceStr.charAt(position - 1))) {
+            if (position > 0 && symbol.isNeedBeforeSpace() && !isWhitespace(sentenceStr.charAt(position - 1))) {
                 key = "Before";
             }
 
-            if (position < sentenceStr.length() - 1
-                    && symbol.isNeedAfterSpace()
-                    && !Character.isWhitespace(sentenceStr.charAt(position + 1))) {
+            if (position < sentenceStr.length() - 1 && symbol.isNeedAfterSpace()
+                && !isWhitespace(sentenceStr.charAt(position + 1)) && isLetterOrDigit(sentenceStr.charAt(position + 1))) {
                 key += "After";
             }
 
diff --git a/redpen-core/src/test/java/cc/redpen/validator/sentence/SymbolWithSpaceValidatorTest.java b/redpen-core/src/test/java/cc/redpen/validator/sentence/SymbolWithSpaceValidatorTest.java
index 12eaa0277..ef2e389b7 100644
--- a/redpen-core/src/test/java/cc/redpen/validator/sentence/SymbolWithSpaceValidatorTest.java
+++ b/redpen-core/src/test/java/cc/redpen/validator/sentence/SymbolWithSpaceValidatorTest.java
@@ -76,6 +76,20 @@ public void testNeedAfterSpace() throws RedPenException {
         assertEquals(10, errors.get(document).get(0).getStartPosition().get().offset);
     }
 
+    @Test
+    public void testDoNotNeedAfterSpaceAtTheEndOfSentence() throws RedPenException {
+        Document document = prepareSimpleDocument("Hello (world).");
+
+        config = Configuration.builder()
+                .addValidatorConfig(new ValidatorConfiguration("SymbolWithSpace"))
+                .addSymbol(new Symbol(RIGHT_PARENTHESIS, ')', "", false, true))
+                .build();
+
+        RedPen redPen = new RedPen(config);
+        Map<Document, List<ValidationError>> errors = redPen.validate(singletonList(document));
+        assertEquals(0, errors.get(document).size());
+    }
+
     @Test
     public void testNeedBeforeSpace() throws RedPenException {
         Document document = prepareSimpleDocument("I like her(Nancy) very much.");