diff --git a/source/PTDBean.m b/source/PTDBean.m
index 4ccfbf0..9cacc9e 100644
--- a/source/PTDBean.m
+++ b/source/PTDBean.m
@@ -382,6 +382,8 @@ -(id)initWithPeripheral:(CBPeripheral*)peripheral beanManager:(id<PTDBeanManager
 
 -(void)discoverServices{
     
+    profilesValidated = [[NSMutableSet alloc] init];
+    
     oad_profile = nil;
     deviceInfo_profile = nil;
     gatt_serial_profile = nil;