diff --git a/spring-grpc-core/src/main/java/org/springframework/grpc/server/DefaultGrpcServerFactory.java b/spring-grpc-core/src/main/java/org/springframework/grpc/server/DefaultGrpcServerFactory.java
index 957d311..510b7f9 100644
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/server/DefaultGrpcServerFactory.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/DefaultGrpcServerFactory.java
@@ -102,10 +102,10 @@ public class DefaultGrpcServerFactory<T extends ServerBuilder<T>> implements Grp
 
 	@SuppressWarnings("unchecked")
 	private T unixDomainServerBuilder(String path) {
-		if (NettyServerFactoryHelper.isAvailable()) {
+		if (NettyServerFactoryHelper.isEpollAvailable()) {
 			return (T) NettyServerFactoryHelper.forUnixDomainSocket(path);
 		}
-		else if (ShadedNettyServerFactoryHelper.isAvailable()) {
+		else if (ShadedNettyServerFactoryHelper.isEpollAvailable()) {
 			return (T) ShadedNettyServerFactoryHelper.forUnixDomainSocket(path);
 		}
 		throw new IllegalStateException(
diff --git a/spring-grpc-core/src/main/java/org/springframework/grpc/server/NettyServerFactoryHelper.java b/spring-grpc-core/src/main/java/org/springframework/grpc/server/NettyServerFactoryHelper.java
index 2b911b1..19b91db 100644
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/server/NettyServerFactoryHelper.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/NettyServerFactoryHelper.java
@@ -30,13 +30,18 @@ import io.netty.channel.unix.DomainSocketAddress;
 
 class NettyServerFactoryHelper {
 
-	private static final boolean AVAILABLE = ClassUtils.isPresent("io.netty.channel.epoll.Epoll", null)
-			&& Epoll.isAvailable();
+	private static final boolean AVAILABLE = ClassUtils.isPresent("io.netty.channel.epoll.Epoll", null);
+
+	private static final boolean EPOLL_AVAILABLE = AVAILABLE && Epoll.isAvailable();
 
 	public static boolean isAvailable() {
 		return AVAILABLE;
 	}
 
+	public static boolean isEpollAvailable() {
+		return EPOLL_AVAILABLE;
+	}
+
 	public static ServerBuilder<?> forUnixDomainSocket(String path) {
 		return NettyServerBuilder.forAddress(new DomainSocketAddress(path))
 			.channelType(EpollServerDomainSocketChannel.class)
diff --git a/spring-grpc-core/src/main/java/org/springframework/grpc/server/ShadedNettyServerFactoryHelper.java b/spring-grpc-core/src/main/java/org/springframework/grpc/server/ShadedNettyServerFactoryHelper.java
index ba69f97..2af1e56 100644
--- a/spring-grpc-core/src/main/java/org/springframework/grpc/server/ShadedNettyServerFactoryHelper.java
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/ShadedNettyServerFactoryHelper.java
@@ -31,12 +31,18 @@ import io.grpc.netty.shaded.io.netty.channel.unix.DomainSocketAddress;
 class ShadedNettyServerFactoryHelper {
 
 	private static final boolean AVAILABLE = ClassUtils.isPresent("io.grpc.netty.shaded.io.netty.channel.epoll.Epoll",
-			null) && Epoll.isAvailable();
+			null);
+
+	private static final boolean EPOLL_AVAILABLE = AVAILABLE && Epoll.isAvailable();
 
 	public static boolean isAvailable() {
 		return AVAILABLE;
 	}
 
+	public static boolean isEpollAvailable() {
+		return EPOLL_AVAILABLE;
+	}
+
 	public static ServerBuilder<?> forUnixDomainSocket(String path) {
 		return NettyServerBuilder.forAddress(new DomainSocketAddress(path))
 			.channelType(EpollServerDomainSocketChannel.class)