---
 .../src/main/java/org/glassfish/grizzly/NIOTransportBuilder.java     | 5 +++++
 1 file changed, 5 insertions(+)
diff --git a/modules/grizzly/src/main/java/org/glassfish/grizzly/NIOTransportBuilder.java b/modules/grizzly/src/main/java/org/glassfish/grizzly/NIOTransportBuilder.java
index 9cc98cf..8630c8b4 100644
--- a/modules/grizzly/src/main/java/org/glassfish/grizzly/NIOTransportBuilder.java
+++ b/modules/grizzly/src/main/java/org/glassfish/grizzly/NIOTransportBuilder.java
@@ -149,6 +149,11 @@ public abstract class NIOTransportBuilder<T extends NIOTransportBuilder> {
      */
     public T setSelectorThreadPoolConfig(final ThreadPoolConfig threadPoolConfig) {
         transport.setKernelThreadPoolConfig(threadPoolConfig);
+        /*
+         * selector runners count MUST not be greater than number of threads in the pool
+         */
+        int selectorRunnersCount = Math.min(threadPoolConfig.getMaxPoolSize(), transport.getSelectorRunnersCount());
+        transport.setSelectorRunnersCount(selectorRunnersCount);
         return getThis();
     }
 
-- 
1.8.5.3