diff --git a/AFNetworking/AFHTTPClient.m b/AFNetworking/AFHTTPClient.m
index 91a4d1b..aefb2cb 100644
--- a/AFNetworking/AFHTTPClient.m
+++ b/AFNetworking/AFHTTPClient.m
@@ -32,7 +32,6 @@
 #import <UIKit/UIKit.h>
 #endif
 
-static NSString * const kAFMultipartFormLineDelimiter = @"\r\n"; // CRLF
 static NSString * const kAFMultipartFormBoundary = @"Boundary+0xAbCdEfGbOuNdArY";
 
 @interface AFMultipartFormData : NSObject <AFMultipartFormData> {
@@ -376,16 +375,18 @@ static NSString * AFPropertyListStringFromParameters(NSDictionary *parameters) {
 
 #pragma mark -
 
+static NSString * const kAFMultipartFormCRLF = @"\r\n";
+
 static inline NSString * AFMultipartFormInitialBoundary() {
-    return [NSString stringWithFormat:@"--%@%@", kAFMultipartFormBoundary, kAFMultipartFormLineDelimiter];
+    return [NSString stringWithFormat:@"--%@%@", kAFMultipartFormBoundary, kAFMultipartFormCRLF];
 }
 
 static inline NSString * AFMultipartFormEncapsulationBoundary() {
-    return [NSString stringWithFormat:@"%@--%@%@", kAFMultipartFormLineDelimiter, kAFMultipartFormBoundary, kAFMultipartFormLineDelimiter];
+    return [NSString stringWithFormat:@"%@--%@%@", kAFMultipartFormCRLF, kAFMultipartFormBoundary, kAFMultipartFormCRLF];
 }
 
 static inline NSString * AFMultipartFormFinalBoundary() {
-    return [NSString stringWithFormat:@"%@--%@--", kAFMultipartFormLineDelimiter, kAFMultipartFormBoundary];
+    return [NSString stringWithFormat:@"%@--%@--%@%@", kAFMultipartFormCRLF, kAFMultipartFormBoundary, kAFMultipartFormCRLF, kAFMultipartFormCRLF];
 }
 
 @interface AFMultipartFormData ()
@@ -430,10 +431,10 @@ static inline NSString * AFMultipartFormFinalBoundary() {
     }
     
     for (NSString *field in [headers allKeys]) {
-        [self appendString:[NSString stringWithFormat:@"%@: %@%@", field, [headers valueForKey:field], kAFMultipartFormLineDelimiter]];
+        [self appendString:[NSString stringWithFormat:@"%@: %@%@", field, [headers valueForKey:field], kAFMultipartFormCRLF]];
     }
     
-    [self appendString:kAFMultipartFormLineDelimiter];
+    [self appendString:kAFMultipartFormCRLF];
     [self appendData:body];
 }