diff --git a/grails-plugin-url-mappings/src/main/groovy/org/codehaus/groovy/grails/web/mapping/RegexUrlMapping.java b/grails-plugin-url-mappings/src/main/groovy/org/codehaus/groovy/grails/web/mapping/RegexUrlMapping.java
index 73b04d38b53..bceef6cfdae 100644
--- a/grails-plugin-url-mappings/src/main/groovy/org/codehaus/groovy/grails/web/mapping/RegexUrlMapping.java
+++ b/grails-plugin-url-mappings/src/main/groovy/org/codehaus/groovy/grails/web/mapping/RegexUrlMapping.java
@@ -220,7 +220,6 @@ protected Pattern convertToRegex(String url) {
             String urlRoot = lastSlash > -1 ? pattern.substring(0, lastSlash) : pattern;
             String urlEnd = lastSlash > -1 ? pattern.substring(lastSlash, pattern.length()) : "";
 
-
             // Now replace "*" with "[^/]" and "**" with ".*".
             pattern = "^" + urlRoot
                                     .replace("(\\.(*))", "\\.?([^/]+)?")
@@ -230,9 +229,12 @@ protected Pattern convertToRegex(String url) {
 
             pattern += urlEnd
                                 .replace("(\\.(*))", "\\.?([^/]+)?")
-                                .replaceAll("([^\\*])\\*([^\\*])", "$1[^/\\.]+$2")
-                                .replaceAll("([^\\*])\\*$", "$1[^/\\.]+")
-                                .replaceAll("\\*\\*", ".*");
+                                .replaceAll("([^\\*])\\*([^\\*])", "$1[^/]+$2")
+                                .replaceAll("([^\\*])\\*$", "$1[^/]+")
+                                .replaceAll("\\*\\*", ".*")
+                                .replaceAll("\\(\\[\\^\\/\\]\\+\\)\\\\\\.", "([^/.]+)\\\\.")
+                                .replaceAll("\\(\\[\\^\\/\\]\\+\\)\\?\\\\\\.", "([^/.]+)\\?\\\\.")
+                                ;
 
             pattern += "/??$";
             regex = Pattern.compile(pattern);
diff --git a/grails-plugin-url-mappings/src/test/groovy/org/codehaus/groovy/grails/web/mapping/UrlMappingsWithOptionalExtensionSpec.groovy b/grails-plugin-url-mappings/src/test/groovy/org/codehaus/groovy/grails/web/mapping/UrlMappingsWithOptionalExtensionSpec.groovy
index db6ec4dbf66..83a95a98bac 100644
--- a/grails-plugin-url-mappings/src/test/groovy/org/codehaus/groovy/grails/web/mapping/UrlMappingsWithOptionalExtensionSpec.groovy
+++ b/grails-plugin-url-mappings/src/test/groovy/org/codehaus/groovy/grails/web/mapping/UrlMappingsWithOptionalExtensionSpec.groovy
@@ -34,7 +34,7 @@ class UrlMappingRsWithOptionalExtensionSpec extends AbstractUrlMappingsSpec {
 
     }
 
-    void "Test that dynamic URL mappings can be specified with an optional extension"() {
+    void "Test that dynamic URL mappings can be specified with an optional parameter and an optional extension"() {
         given:"A URL mapping with an optional extension"
             def urlMappingsHolder = getUrlMappingsHolder {
                 "/$controller/$action?(.$format)?"()
@@ -46,8 +46,19 @@ class UrlMappingRsWithOptionalExtensionSpec extends AbstractUrlMappingsSpec {
             urlMappingsHolder.match('/book')
             urlMappingsHolder.match('/book/list')
             urlMappingsHolder.match('/book/list').parameters.format == null
+    }
 
-
+    void "Test that dynamic URL mappings can be specified with a required parameter and an optional extension"() {
+        given:"A URL mapping with an optional extension"
+            def urlMappingsHolder = getUrlMappingsHolder {
+                "/$controller/$action(.$format)?"()
+            }
+            
+        expect:"URLs with and without the format specified match"
+            urlMappingsHolder.match('/book/list.xml')
+            urlMappingsHolder.match('/book/list.xml').parameters.format == 'xml'
+            urlMappingsHolder.match('/book/list')
+            urlMappingsHolder.match('/book/list').parameters.format == null
     }
 
     void "Test deep dynamic URL mappings can be specified with an optional extension"() {
diff --git a/grails-test-suite-web/src/test/groovy/org/codehaus/groovy/grails/web/mapping/RegexUrlMappingTests.groovy b/grails-test-suite-web/src/test/groovy/org/codehaus/groovy/grails/web/mapping/RegexUrlMappingTests.groovy
index a72f77301da..381d5bbc852 100644
--- a/grails-test-suite-web/src/test/groovy/org/codehaus/groovy/grails/web/mapping/RegexUrlMappingTests.groovy
+++ b/grails-test-suite-web/src/test/groovy/org/codehaus/groovy/grails/web/mapping/RegexUrlMappingTests.groovy
@@ -61,6 +61,10 @@ mappings {
       controller = "survey"
       action = "viewByName"
   }
+  "/reports/$foo" {
+      controller = 'reporting'
+      action = 'view'
+  }
 }
 '''
     void testMaptoURI() {
@@ -352,6 +356,22 @@ mappings {
         assertEquals 'survey', info.controllerName
         assertEquals 'viewByName', info.actionName
     }
+    
+    void testParameterContainingADot() {
+        def holder = new DefaultUrlMappingsHolder(evaluator.evaluateMappings(new ByteArrayResource(mappingScript.bytes)))
+        
+        def info = holder.match("/reports/my")
+        assertNotNull info
+        assertEquals 'reporting', info.controllerName
+        assertEquals 'view', info.actionName
+        assertEquals 'my', info.params.foo
+        
+        info = holder.match("/reports/my.id")
+        assertNotNull info
+        assertEquals 'reporting', info.controllerName
+        assertEquals 'view', info.actionName
+        assertEquals 'my.id', info.params.foo
+    }
 
     void testInit() {
         def parser = new DefaultUrlMappingParser()