diff --git a/URBSegmentedControl.m b/URBSegmentedControl.m
index c455a70..8945c0d 100644
--- a/URBSegmentedControl.m
+++ b/URBSegmentedControl.m
@@ -118,6 +118,7 @@ - (id)initWithTitles:(NSArray *)titles icons:(NSArray *)icons {
 }
 
 - (id)initWithCoder:(NSCoder *)aDecoder {
+    _selectedSegmentIndex = -1;
     self = [super initWithCoder:aDecoder];
     if (self) {
         CGRect nibFrame = self.frame;
@@ -317,6 +318,7 @@ - (NSUInteger)numberOfSegments {
 }
 
 - (void)setEnabled:(BOOL)enabled forSegmentAtIndex:(NSUInteger)segment {
+	[super setEnabled:enabled forSegmentAtIndex:segment];
 	[self segmentAtIndex:segment].enabled = enabled;
 }
 
@@ -326,13 +328,14 @@ - (BOOL)isEnabledForSegmentAtIndex:(NSUInteger)segment {
 
 - (void)setSelectedSegmentIndex:(NSInteger)selectedSegmentIndex {
 	if (_selectedSegmentIndex != selectedSegmentIndex) {
-		NSParameterAssert(selectedSegmentIndex < (NSInteger)self.items.count && selectedSegmentIndex >= 0);
+		NSParameterAssert(selectedSegmentIndex < (NSInteger)self.items.count);
 		
 		// deselect current segment if selected
 		if (_selectedSegmentIndex >= 0)
 			((URBSegmentView *)[self segmentAtIndex:_selectedSegmentIndex]).selected = NO;
 		
-		[self segmentAtIndex:selectedSegmentIndex].selected = YES;
+		if (selectedSegmentIndex >= 0)
+			((URBSegmentView *)[self segmentAtIndex:selectedSegmentIndex]).selected = YES;
 		
 		_lastSelectedSegmentIndex = _selectedSegmentIndex;
 		_selectedSegmentIndex = selectedSegmentIndex;