diff --git a/SVGeocoder/SVGeocoder.h b/SVGeocoder/SVGeocoder.h
index 3d1e3b0..0e8f7d6 100644
--- a/SVGeocoder/SVGeocoder.h
+++ b/SVGeocoder/SVGeocoder.h
@@ -39,17 +39,17 @@ typedef void (^SVGeocoderCompletionHandler)(NSArray *placemarks, NSHTTPURLRespon
 
 + (SVGeocoder*)geocode:(NSString *)address completion:(SVGeocoderCompletionHandler)block;
 
-+ (SVGeocoder*)geocode:(NSString *)address region:(CLRegion *)region completion:(SVGeocoderCompletionHandler)block;
++ (SVGeocoder*)geocode:(NSString *)address region:(CLCircularRegion *)region completion:(SVGeocoderCompletionHandler)block;
 + (SVGeocoder*)geocode:(NSString *)address components:(NSDictionary *)components completion:(SVGeocoderCompletionHandler)block;
-+ (SVGeocoder*)geocode:(NSString *)address region:(CLRegion *)region components:(NSDictionary *)components completion:(SVGeocoderCompletionHandler)block;
++ (SVGeocoder*)geocode:(NSString *)address region:(CLCircularRegion *)region components:(NSDictionary *)components completion:(SVGeocoderCompletionHandler)block;
 
 + (SVGeocoder*)reverseGeocode:(CLLocationCoordinate2D)coordinate completion:(SVGeocoderCompletionHandler)block;
 
 - (SVGeocoder*)initWithAddress:(NSString *)address completion:(SVGeocoderCompletionHandler)block;
 
-- (SVGeocoder*)initWithAddress:(NSString *)address region:(CLRegion *)region completion:(SVGeocoderCompletionHandler)block;
+- (SVGeocoder*)initWithAddress:(NSString *)address region:(CLCircularRegion *)region completion:(SVGeocoderCompletionHandler)block;
 - (SVGeocoder*)initWithAddress:(NSString *)address components:(NSDictionary *)components completion:(SVGeocoderCompletionHandler)block;
-- (SVGeocoder*)initWithAddress:(NSString *)address region:(CLRegion *)region components:(NSDictionary *)components completion:(SVGeocoderCompletionHandler)block;
+- (SVGeocoder*)initWithAddress:(NSString *)address region:(CLCircularRegion *)region components:(NSDictionary *)components completion:(SVGeocoderCompletionHandler)block;
 
 
 - (SVGeocoder*)initWithCoordinate:(CLLocationCoordinate2D)coordinate completion:(SVGeocoderCompletionHandler)block;
diff --git a/SVGeocoder/SVGeocoder.m b/SVGeocoder/SVGeocoder.m
index 8513a48..616f026 100644
--- a/SVGeocoder/SVGeocoder.m
+++ b/SVGeocoder/SVGeocoder.m
@@ -45,7 +45,7 @@ - (void)addParametersToRequest:(NSMutableDictionary*)parameters;
 
 - (void)finish;
 - (NSString*)createComponentsStringFromDictionary:(NSDictionary *)components;
-- (NSString*)createBoundsStringFromRegion:(CLRegion *)region;
+- (NSString*)createBoundsStringFromRegion:(CLCircularRegion *)region;
 
 - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error;
 
@@ -77,7 +77,7 @@ + (SVGeocoder *)geocode:(NSString *)address completion:(SVGeocoderCompletionHand
     return geocoder;
 }
 
-+ (SVGeocoder *)geocode:(NSString *)address region:(CLRegion *)region completion:(SVGeocoderCompletionHandler)block {
++ (SVGeocoder *)geocode:(NSString *)address region:(CLCircularRegion *)region completion:(SVGeocoderCompletionHandler)block {
     SVGeocoder *geocoder = [[self alloc] initWithAddress:address region:region completion:block];
     [geocoder start];
     return geocoder;
@@ -89,7 +89,7 @@ + (SVGeocoder*)geocode:(NSString *)address components:(NSDictionary *)components
     return geocoder;
 }
 
-+ (SVGeocoder*)geocode:(NSString *)address region:(CLRegion *)region components:(NSDictionary *)components completion:(SVGeocoderCompletionHandler)block {
++ (SVGeocoder*)geocode:(NSString *)address region:(CLCircularRegion *)region components:(NSDictionary *)components completion:(SVGeocoderCompletionHandler)block {
     SVGeocoder *geocoder = [[self alloc] initWithAddress:address region:region components:components completion:block];
     [geocoder start];
     return geocoder;
@@ -124,7 +124,7 @@ - (SVGeocoder*)initWithAddress:(NSString*)address completion:(SVGeocoderCompleti
     return [self initWithParameters:parameters completion:block];
 }
 
-- (SVGeocoder*)initWithAddress:(NSString *)address region:(CLRegion *)region completion:(SVGeocoderCompletionHandler)block {
+- (SVGeocoder*)initWithAddress:(NSString *)address region:(CLCircularRegion *)region completion:(SVGeocoderCompletionHandler)block {
     NSString *bounds = [self createBoundsStringFromRegion:region];
     
     NSMutableDictionary *parameters = [NSMutableDictionary dictionaryWithObjectsAndKeys: 
@@ -144,7 +144,7 @@ - (SVGeocoder*)initWithAddress:(NSString *)address components:(NSDictionary *)co
     return [self initWithParameters:parameters completion:block];
 }
 
-- (SVGeocoder*)initWithAddress:(NSString *)address region:(CLRegion *)region components:(NSDictionary *)components completion:(SVGeocoderCompletionHandler)block {
+- (SVGeocoder*)initWithAddress:(NSString *)address region:(CLCircularRegion *)region components:(NSDictionary *)components completion:(SVGeocoderCompletionHandler)block {
     NSString *bounds = [self createBoundsStringFromRegion:region];
     NSString *componentsValue = [self createComponentsStringFromDictionary:components];
     
@@ -219,7 +219,7 @@ - (NSString*)createComponentsStringFromDictionary:(NSDictionary *)components {
     return componentsValue;
 }
 
-- (NSString*)createBoundsStringFromRegion:(CLRegion *)region {
+- (NSString*)createBoundsStringFromRegion:(CLCircularRegion *)region {
     MKCoordinateRegion coordinateRegion = MKCoordinateRegionMakeWithDistance(region.center, region.radius, region.radius);
     
     NSString *bounds = [NSString stringWithFormat:@"%f,%f|%f,%f",