diff --git a/src/FSNConnection.h b/src/FSNConnection.h
index 382b723..6a16af6 100644
--- a/src/FSNConnection.h
+++ b/src/FSNConnection.h
@@ -99,7 +99,7 @@ NSString* stringForRequestMethod(FSNRequestMethod method);
 @property (nonatomic, readonly) float uploadProgress;
 @property (nonatomic, readonly) float downloadProgress;
 
-@property (nonatomic, readonly) int concurrencyCountAtStart;
+@property (nonatomic, readonly) NSInteger concurrencyCountAtStart;
 @property (nonatomic, readonly) NSTimeInterval startTime;
 @property (nonatomic, readonly) NSTimeInterval challengeInterval;
 @property (nonatomic, readonly) NSTimeInterval responseInterval;
diff --git a/src/FSNConnection.m b/src/FSNConnection.m
index 75600b5..7cd6e87 100644
--- a/src/FSNConnection.m
+++ b/src/FSNConnection.m
@@ -58,7 +58,7 @@ @interface FSNConnection ()
 
 @property (nonatomic, readwrite) long long downloadProgressBytes;
 
-@property (nonatomic, readwrite) int concurrencyCountAtStart;
+@property (nonatomic, readwrite) NSInteger concurrencyCountAtStart;
 @property (nonatomic, readwrite) NSTimeInterval startTime;
 @property (nonatomic, readwrite) NSTimeInterval challengeInterval;
 @property (nonatomic, readwrite) NSTimeInterval responseInterval;