diff --git a/repos/os/src/test/blk/cli/main.cc b/repos/os/src/test/blk/cli/main.cc
index 02fc7a4263..12e3c79b6a 100644
--- a/repos/os/src/test/blk/cli/main.cc
+++ b/repos/os/src/test/blk/cli/main.cc
@@ -383,7 +383,7 @@ void perform(Genode::Entrypoint &ep, Genode::Heap &heap, unsigned timeo_ms = 0)
 
 
 Genode::size_t Component::stack_size() {
-	return 2048*sizeof(Genode::addr_t); }
+	return 4096*sizeof(Genode::addr_t); }
 
 
 void Component::construct(Genode::Env &env)