diff --git a/src/AudioUnit/AUParameter.cs b/src/AudioUnit/AUParameter.cs
index bad7e3f8ad50..036d792eb7f5 100644
--- a/src/AudioUnit/AUParameter.cs
+++ b/src/AudioUnit/AUParameter.cs
@@ -23,12 +23,16 @@ public string GetString (float? value)
 
 		public void SetValue (float value, AUParameterObserverToken originator)
 		{
+#pragma warning disable CS0618
 			SetValue (value, originator.ObserverToken);
+#pragma warning restore CS0618
 		}
 
 		public void SetValue (float value, AUParameterObserverToken originator, ulong hostTime)
 		{
+#pragma warning disable CS0618
 			SetValue (value, originator.ObserverToken, hostTime);
+#pragma warning restore CS0618
 		}
 	}
 #endif
diff --git a/src/AudioUnit/AUParameterNode.cs b/src/AudioUnit/AUParameterNode.cs
index 792b8693127f..3ee8cb4b5366 100644
--- a/src/AudioUnit/AUParameterNode.cs
+++ b/src/AudioUnit/AUParameterNode.cs
@@ -11,7 +11,9 @@ public AUParameterObserverToken CreateTokenByAddingParameterObserver (AUParamete
 			if (observer == null)
 				throw new ArgumentNullException ("observer");
 
+#pragma warning disable CS0618
 			IntPtr observerToken = TokenByAddingParameterObserver (observer);
+#pragma warning restore CS0618
 
 			return new AUParameterObserverToken {
 				ObserverToken = observerToken
@@ -23,7 +25,9 @@ public AUParameterObserverToken CreateTokenByAddingParameterRecordingObserver (A
 			if (observer == null)
 				throw new ArgumentNullException ("observer");
 
+#pragma warning disable CS0618
 			IntPtr observerToken = TokenByAddingParameterRecordingObserver (observer);
+#pragma warning restore CS0618
 
 			return new AUParameterObserverToken {
 				ObserverToken = observerToken
@@ -32,7 +36,9 @@ public AUParameterObserverToken CreateTokenByAddingParameterRecordingObserver (A
 
 		public void RemoveParameterObserver (AUParameterObserverToken token)
 		{
+#pragma warning disable CS0618
 			RemoveParameterObserver (token.ObserverToken);
+#pragma warning restore CS0618
 		}
 	}
 }
diff --git a/src/BusinessChat/BCChatAction.cs b/src/BusinessChat/BCChatAction.cs
index 306b13a3ba5f..d422dc8832cf 100644
--- a/src/BusinessChat/BCChatAction.cs
+++ b/src/BusinessChat/BCChatAction.cs
@@ -14,7 +14,7 @@ public static void OpenTranscript (string businessIdentifier, Dictionary<BCParam
 				values [index] = new NSString (intentParameters [k]);
 				index++; 
 			}
-			using (var dict = NSDictionary<NSString, NSString>.FromObjectsAndKeys (values, keys))
+			using (var dict = NSDictionary<NSString, NSString>.FromObjectsAndKeys (values, keys, keys.Length))
 				OpenTranscript (businessIdentifier, dict);
 		}
 	}
diff --git a/src/Foundation/NSFileManager.cs b/src/Foundation/NSFileManager.cs
index f68b14be8bb9..4cdc662cb80b 100644
--- a/src/Foundation/NSFileManager.cs
+++ b/src/Foundation/NSFileManager.cs
@@ -407,8 +407,6 @@ internal static NSFileSystemAttributes FromDictionary (NSDictionary dict)
 			if (dict == null)
 				return null;
 			var ret = new NSFileSystemAttributes (dict);
-			ulong l = 0;
-			uint i = 0;
 			ret.Size      = NSFileAttributes.fetch_ulong (dict, NSFileManager.SystemSize) ?? 0;
 			ret.FreeSize  = NSFileAttributes.fetch_ulong (dict, NSFileManager.SystemFreeSize) ?? 0;
 			ret.Nodes     = NSFileAttributes.fetch_long (dict, NSFileManager.SystemNodes) ?? 0;