diff --git a/os/src/app/cli_monitor/ram.h b/os/src/app/cli_monitor/ram.h
index 6140a9be2..f24f60f56 100644
--- a/os/src/app/cli_monitor/ram.h
+++ b/os/src/app/cli_monitor/ram.h
@@ -112,12 +112,15 @@ class Ram
 		{
 			Genode::Lock::Guard guard(_lock);
 
+			if (_ram.avail() < (_preserve + amount)) {
+				Genode::Signal_transmitter(_yield_sigh).submit();
+				throw Transfer_quota_failed();
+			}
+
 			int const ret = _ram.transfer_quota(to, amount);
 
 			if (ret != 0)
 				throw Transfer_quota_failed();
-
-			_validate_preservation();
 		}
 
 		/**