diff --git a/repos/base-hw/src/test/cpu_quota/main.cc b/repos/base-hw/src/test/cpu_quota/main.cc
index 473a97011..5b15034aa 100644
--- a/repos/base-hw/src/test/cpu_quota/main.cc
+++ b/repos/base-hw/src/test/cpu_quota/main.cc
@@ -73,7 +73,7 @@ class Sync::Signal
 		}
 };
 
-class Counter : private Thread<8 * 1024>
+class Counter : private Thread<2 * 1024 * sizeof(Genode::addr_t)>
 {
 	private:
 
diff --git a/repos/os/run/cpu_quota.run b/repos/os/run/cpu_quota.run
index 4e77ca490..404098821 100644
--- a/repos/os/run/cpu_quota.run
+++ b/repos/os/run/cpu_quota.run
@@ -128,7 +128,7 @@ build_boot_image "core init timer test-cpu_quota test-sync"
 # Execution
 #
 
-append qemu_args "-nographic -m 64"
+append qemu_args "-nographic -m 128"
 
 run_genode_until ".*done.*\n.*done.*\n.*done.*\n" 100