diff --git a/src/FBRequest.h b/src/FBRequest.h
index 7205c10bf9..c1143493b9 100644
--- a/src/FBRequest.h
+++ b/src/FBRequest.h
@@ -39,6 +39,7 @@ typedef NSUInteger FBRequestState;
   NSMutableData*        _responseText;
   FBRequestState        _state;
   NSError*              _error;
+  BOOL                  _sessionDidExpire;
 }
 
 
@@ -64,6 +65,7 @@ typedef NSUInteger FBRequestState;
 @property(nonatomic,retain) NSURLConnection*  connection;
 @property(nonatomic,retain) NSMutableData* responseText;
 @property(nonatomic,readonly) FBRequestState state;
+@property(nonatomic,readonly) BOOL sessionDidExpire;
 
 /**
  * Error returned by the server in case of request's failure (or nil otherwise).
diff --git a/src/FBRequest.m b/src/FBRequest.m
index 593d3160dd..eb1b8104eb 100644
--- a/src/FBRequest.m
+++ b/src/FBRequest.m
@@ -23,6 +23,7 @@
 static NSString* kUserAgent = @"FacebookConnect";
 static NSString* kStringBoundary = @"3i2ndDfv2rTHiSisAbouNdArYfORhtTPEefj3q2f";
 static const int kGeneralErrorCode = 10000;
+static const int kRESTAPIAccessTokenErrorCode = 190;
 
 static const NSTimeInterval kTimeoutInterval = 180.0;
 
@@ -30,6 +31,7 @@
 
 @interface FBRequest ()
 @property (nonatomic,readwrite) FBRequestState state;
+@property (nonatomic,readwrite) BOOL sessionDidExpire;
 @end
 
 @implementation FBRequest
@@ -41,6 +43,7 @@ @implementation FBRequest
             connection = _connection,
             responseText = _responseText,
             state = _state,
+            sessionDidExpire = _sessionDidExpire,
             error = _error;
 //////////////////////////////////////////////////////////////////////////////////////////////////
 // class public
@@ -239,10 +242,12 @@ - (id)parseJsonResponse:(NSData *)data error:(NSError **)error {
  *                          fails with error
  */
 - (void)failWithError:(NSError *)error {
+  if ([error code] == kRESTAPIAccessTokenErrorCode) {
+    self.sessionDidExpire = YES;
+  }
   if ([_delegate respondsToSelector:@selector(request:didFailWithError:)]) {
     [_delegate request:self didFailWithError:error];
   }
-  self.state = kFBRequestStateError;
 }
 
 /*
@@ -313,6 +318,7 @@ - (void)connect {
 
   _connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
   self.state = kFBRequestStateLoading;
+  self.sessionDidExpire = NO;
 }
 
 /**
@@ -355,10 +361,7 @@ - (void)connectionDidFinishLoading:(NSURLConnection *)connection {
 
   self.responseText = nil;
   self.connection = nil;
-
-  if (self.state != kFBRequestStateError) {
-    self.state = kFBRequestStateComplete;
-  }
+  self.state = kFBRequestStateComplete;
 }
 
 - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
@@ -366,8 +369,7 @@ - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)err
 
   self.responseText = nil;
   self.connection = nil;
-
-  self.state = kFBRequestStateError;
+  self.state = kFBRequestStateComplete;
 }
 
 @end
diff --git a/src/Facebook.m b/src/Facebook.m
index 4380e84afa..e765ec5e86 100644
--- a/src/Facebook.m
+++ b/src/Facebook.m
@@ -182,13 +182,13 @@ - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(N
   if (context == finishedContext) {
     FBRequest* _request = (FBRequest*)object;
     FBRequestState requestState = [_request state];
-    if (requestState == kFBRequestStateError) {
-      [self invalidateSession];
-      if ([self.sessionDelegate respondsToSelector:@selector(fbSessionInvalidated)]) {
-        [self.sessionDelegate fbSessionInvalidated];
+    if (requestState == kFBRequestStateComplete) {
+      if ([_request sessionDidExpire]) {
+        [self invalidateSession];
+        if ([self.sessionDelegate respondsToSelector:@selector(fbSessionInvalidated)]) {
+          [self.sessionDelegate fbSessionInvalidated];
+        }
       }
-    }
-    if (requestState == kFBRequestStateComplete || requestState == kFBRequestStateError) {
       [_request removeObserver:self forKeyPath:requestFinishedKeyPath];
       [_requests removeObject:_request];
     }