diff --git a/Classes/ASIFormDataRequest.m b/Classes/ASIFormDataRequest.m
index 6cf72802..e13ab0ad 100644
--- a/Classes/ASIFormDataRequest.m
+++ b/Classes/ASIFormDataRequest.m
@@ -30,7 +30,7 @@ @implementation ASIFormDataRequest
 #pragma mark utilities
 - (NSString*)encodeURL:(NSString *)string
 {
-	NSString *newString = NSMakeCollectable([(NSString *)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (CFStringRef)string, NULL, CFSTR(":/?#[]@!$ &'()*+,;=\"<>%{}|\\^~`"), CFStringConvertNSStringEncodingToEncoding([self stringEncoding])) autorelease]);
+	NSString *newString = [NSMakeCollectable(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (CFStringRef)string, NULL, CFSTR(":/?#[]@!$ &'()*+,;=\"<>%{}|\\^~`"), CFStringConvertNSStringEncodingToEncoding([self stringEncoding]))) autorelease];
 	if (newString) {
 		return newString;
 	}
diff --git a/Classes/ASIHTTPRequest.m b/Classes/ASIHTTPRequest.m
index 0164d6ab..8131ca4e 100644
--- a/Classes/ASIHTTPRequest.m
+++ b/Classes/ASIHTTPRequest.m
@@ -1519,7 +1519,7 @@ - (void)checkRequestStatus
 			[self setLastBytesSent:totalBytesSent];	
 			
 			// Find out how much data we've uploaded so far
-			[self setTotalBytesSent:[NSMakeCollectable([(NSNumber *)CFReadStreamCopyProperty((CFReadStreamRef)[self readStream], kCFStreamPropertyHTTPRequestBytesWrittenCount) autorelease]) unsignedLongLongValue]];
+			[self setTotalBytesSent:[[NSMakeCollectable(CFReadStreamCopyProperty((CFReadStreamRef)[self readStream], kCFStreamPropertyHTTPRequestBytesWrittenCount)) autorelease] unsignedLongLongValue]];
 			if (totalBytesSent > lastBytesSent) {
 				
 				// We've uploaded more data,  reset the timeout
@@ -2238,7 +2238,7 @@ - (void)readResponseHeaders
 		
 		NSString *connectionHeader = [[[self responseHeaders] objectForKey:@"Connection"] lowercaseString];
 
-		NSString *httpVersion = NSMakeCollectable([(NSString *)CFHTTPMessageCopyVersion(message) autorelease]);
+		NSString *httpVersion = [NSMakeCollectable(CFHTTPMessageCopyVersion(message)) autorelease];
 		
 		// Don't re-use the connection if the server is HTTP 1.0 and didn't send Connection: Keep-Alive
 		if (![httpVersion isEqualToString:(NSString *)kCFHTTPVersion1_0] || [connectionHeader isEqualToString:@"keep-alive"]) {
@@ -3385,7 +3385,7 @@ - (void)handleStreamComplete
 	[progressLock lock];	
 	// Find out how much data we've uploaded so far
 	[self setLastBytesSent:totalBytesSent];	
-	[self setTotalBytesSent:[NSMakeCollectable([(NSNumber *)CFReadStreamCopyProperty((CFReadStreamRef)[self readStream], kCFStreamPropertyHTTPRequestBytesWrittenCount) autorelease]) unsignedLongLongValue]];
+	[self setTotalBytesSent:[[NSMakeCollectable(CFReadStreamCopyProperty((CFReadStreamRef)[self readStream], kCFStreamPropertyHTTPRequestBytesWrittenCount)) autorelease] unsignedLongLongValue]];
 	[self setComplete:YES];
 	if (![self contentLength]) {
 		[self setContentLength:[self totalBytesRead]];
@@ -3629,7 +3629,7 @@ - (BOOL)retryUsingNewConnection
 - (void)handleStreamError
 
 {
-	NSError *underlyingError = NSMakeCollectable([(NSError *)CFReadStreamCopyError((CFReadStreamRef)[self readStream]) autorelease]);
+	NSError *underlyingError = [NSMakeCollectable(CFReadStreamCopyError((CFReadStreamRef)[self readStream])) autorelease];
 
 	if (![self error]) { // We may already have handled this error
 		
@@ -3807,12 +3807,12 @@ - (BOOL)configureProxies
 		} else {
 
 #if TARGET_OS_IPHONE
-			NSDictionary *proxySettings = NSMakeCollectable([(NSDictionary *)CFNetworkCopySystemProxySettings() autorelease]);
+			NSDictionary *proxySettings = [NSMakeCollectable(CFNetworkCopySystemProxySettings()) autorelease];
 #else
-			NSDictionary *proxySettings = NSMakeCollectable([(NSDictionary *)SCDynamicStoreCopyProxies(NULL) autorelease]);
+			NSDictionary *proxySettings = [NSMakeCollectable(SCDynamicStoreCopyProxies(NULL)) autorelease];
 #endif
 
-			proxies = NSMakeCollectable([(NSArray *)CFNetworkCopyProxiesForURL((CFURLRef)[self url], (CFDictionaryRef)proxySettings) autorelease]);
+			proxies = [NSMakeCollectable(CFNetworkCopyProxiesForURL((CFURLRef)[self url], (CFDictionaryRef)proxySettings)) autorelease];
 
 			// Now check to see if the proxy settings contained a PAC url, we need to run the script to get the real list of proxies if so
 			NSDictionary *settings = [proxies objectAtIndex:0];
@@ -3964,7 +3964,7 @@ - (void)runPACScript:(NSString *)script
 
 		// Obtain the list of proxies by running the autoconfiguration script
 		CFErrorRef err = NULL;
-		NSArray *proxies = NSMakeCollectable([(NSArray *)CFNetworkCopyProxiesForAutoConfigurationScript((CFStringRef)script,(CFURLRef)[self url], &err) autorelease]);
+		NSArray *proxies = [NSMakeCollectable(CFNetworkCopyProxiesForAutoConfigurationScript((CFStringRef)script,(CFURLRef)[self url], &err)) autorelease];
 		if (!err && [proxies count] > 0) {
 			NSDictionary *settings = [proxies objectAtIndex:0];
 			[self setProxyHost:[settings objectForKey:(NSString *)kCFProxyHostNameKey]];
@@ -4445,7 +4445,7 @@ + (NSString *)mimeTypeForFileAtPath:(NSString *)path
 	if (!MIMEType) {
 		return @"application/octet-stream";
 	}
-    return NSMakeCollectable([(NSString *)MIMEType autorelease]);
+    return [NSMakeCollectable(MIMEType) autorelease];
 }
 
 #pragma mark bandwidth measurement / throttling