diff --git a/fdbrpc/Net2FileSystem.cpp b/fdbrpc/Net2FileSystem.cpp
index 0331d6413a..2377ddfd7e 100644
--- a/fdbrpc/Net2FileSystem.cpp
+++ b/fdbrpc/Net2FileSystem.cpp
@@ -93,10 +93,8 @@ Net2FileSystem::Net2FileSystem(double ioTimeout, std::string fileSystemPath)
 {
 	Net2AsyncFile::init();
 #ifdef __linux__
-	if (FLOW_KNOBS->DISABLE_POSIX_KERNEL_AIO)
-		return;
-
-	AsyncFileKAIO::init( Reference<IEventFD>(N2::ASIOReactor::getEventFD()), ioTimeout );
+	if (!FLOW_KNOBS->DISABLE_POSIX_KERNEL_AIO)
+		AsyncFileKAIO::init( Reference<IEventFD>(N2::ASIOReactor::getEventFD()), ioTimeout );
 
 	if (fileSystemPath.empty()) {
 		checkFileSystem = false;