diff --git a/src/ProcessUtils.cpp b/src/ProcessUtils.cpp
index 0707440..aa27fad 100644
--- a/src/ProcessUtils.cpp
+++ b/src/ProcessUtils.cpp
@@ -195,7 +195,7 @@ void ProcessUtils::runElevatedMac(const std::string& executable,
 			char** argv;
 			argv = (char**) malloc(sizeof(char*) * args.size() + 1);
 		
-			int i = 0;
+			unsigned int i = 0;
 			for (std::list<std::string>::const_iterator iter = args.begin(); iter != args.end(); iter++)
 			{
 				argv[i] = strdup(iter->c_str());
diff --git a/src/UpdateDialogCocoa.mm b/src/UpdateDialogCocoa.mm
index 69ae964..dc1e972 100644
--- a/src/UpdateDialogCocoa.mm
+++ b/src/UpdateDialogCocoa.mm
@@ -147,6 +147,7 @@ void UpdateDialogCocoa::updateError(const std::string& errorMessage)
 bool UpdateDialogCocoa::updateRetryCancel(const std::string& message)
 {
 	// TODO
+	return false;
 }
 
 void UpdateDialogCocoa::updateProgress(int percentage)