diff --git a/Code/CoreData/RKEntityByAttributeCache.m b/Code/CoreData/RKEntityByAttributeCache.m
index 0cb20307..4ce93813 100644
--- a/Code/CoreData/RKEntityByAttributeCache.m
+++ b/Code/CoreData/RKEntityByAttributeCache.m
@@ -106,11 +106,11 @@
 
     NSError *error = nil;
     NSArray *objectIDs = [self.managedObjectContext executeFetchRequest:fetchRequest error:&error];
+    [fetchRequest release];
     if (error) {
         RKLogError(@"Failed to load entity cache: %@", error);
         return;
     }
-    [fetchRequest release];
 
     self.attributeValuesToObjectIDs = [NSMutableDictionary dictionaryWithCapacity:[objectIDs count]];
     for (NSManagedObjectID *objectID in objectIDs) {
diff --git a/Code/CoreData/RKObjectMappingProvider+CoreData.m b/Code/CoreData/RKObjectMappingProvider+CoreData.m
index ceb46ef1..efdd421d 100644
--- a/Code/CoreData/RKObjectMappingProvider+CoreData.m
+++ b/Code/CoreData/RKObjectMappingProvider+CoreData.m
@@ -15,7 +15,7 @@ RK_FIX_CATEGORY_BUG(RKObjectMappingProvider_CoreData)
 
 - (void)setObjectMapping:(RKObjectMappingDefinition *)objectMapping forResourcePathPattern:(NSString *)resourcePath withFetchRequestBlock:(RKObjectMappingProviderFetchRequestBlock)fetchRequestBlock {
     [self setEntry:[RKObjectMappingProviderContextEntry contextEntryWithMapping:objectMapping
-                                                                       userData:[fetchRequestBlock copy]] forResourcePathPattern:resourcePath];
+                                                                       userData:Block_copy(fetchRequestBlock)] forResourcePathPattern:resourcePath];
 }
 
 - (NSFetchRequest *)fetchRequestForResourcePath:(NSString *)resourcePath {
diff --git a/Code/Network/RKClient.m b/Code/Network/RKClient.m
index 031b2b02..70eb174e 100644
--- a/Code/Network/RKClient.m
+++ b/Code/Network/RKClient.m
@@ -126,8 +126,8 @@ NSString *RKPathAppendQueryParams(NSString *resourcePath, NSDictionary *queryPar
 - (id)init {
     self = [super init];
     if (self) {
-        self.HTTPHeaders = [[NSMutableDictionary alloc] init];
-        self.additionalRootCertificates = [[NSMutableSet alloc] init];
+        self.HTTPHeaders = [NSMutableDictionary dictionary];
+        self.additionalRootCertificates = [NSMutableSet set];
         self.defaultHTTPEncoding = NSUTF8StringEncoding;
         self.cacheTimeoutInterval = 0;
         self.runLoopMode = NSRunLoopCommonModes;
diff --git a/Code/ObjectMapping/RKObjectManager.m b/Code/ObjectMapping/RKObjectManager.m
index c3bb6fc7..846ffb33 100644
--- a/Code/ObjectMapping/RKObjectManager.m
+++ b/Code/ObjectMapping/RKObjectManager.m
@@ -103,8 +103,7 @@ static dispatch_queue_t defaultMappingQueue = nil;
 - (id)initWithBaseURL:(RKURL *)baseURL {
     self = [self init];
     if (self) {
-        self.client = [[RKClient alloc] initWithBaseURL:baseURL];
-        [self.client release];
+        self.client = [RKClient clientWithBaseURL:baseURL];
         self.acceptMIMEType = RKMIMETypeJSON;
     }
 
diff --git a/Code/ObjectMapping/RKObjectMappingProviderContextEntry.m b/Code/ObjectMapping/RKObjectMappingProviderContextEntry.m
index 5abd458a..da328f18 100644
--- a/Code/ObjectMapping/RKObjectMappingProviderContextEntry.m
+++ b/Code/ObjectMapping/RKObjectMappingProviderContextEntry.m
@@ -52,7 +52,7 @@
 }
 
 + (RKObjectMappingProviderContextEntry *)contextEntryWithMapping:(RKObjectMappingDefinition *)mapping userData:(id)userData {
-    RKObjectMappingProviderContextEntry * contextEntry = [RKObjectMappingProviderContextEntry contextEntryWithMapping:mapping];
+    RKObjectMappingProviderContextEntry *contextEntry = [RKObjectMappingProviderContextEntry contextEntryWithMapping:mapping];
     contextEntry.userData = userData;
     return contextEntry;
 }
diff --git a/Code/Support/RKBenchmark.m b/Code/Support/RKBenchmark.m
index 10d1cb86..99124cb7 100644
--- a/Code/Support/RKBenchmark.m
+++ b/Code/Support/RKBenchmark.m
@@ -66,7 +66,7 @@ static NSMutableDictionary * __sharedBenchmarks = nil;
 # pragma mark Initializers
 
 + (id)benchmarkWithName:(NSString *)name {
-    return [[self alloc] initWithName:name];
+    return [[[self alloc] initWithName:name] autorelease];
 }
 
 - (id)initWithName:(NSString *)name {