diff --git a/opencsp/common/lib/process/test/test_MemoryMonitor.py b/opencsp/common/lib/process/test/test_MemoryMonitor.py
index fab7eba64..becaad0bd 100644
--- a/opencsp/common/lib/process/test/test_MemoryMonitor.py
+++ b/opencsp/common/lib/process/test/test_MemoryMonitor.py
@@ -48,7 +48,7 @@ def test_large_memory_usage(self):
         monitor = mm.MemoryMonitor()
         monitor.start()
         time.sleep(1)
-        a = [1] * 1_000_000_000
+        a = [1] * 100_000_000
         time.sleep(1.1)
         monitor.stop(wait=True)
         self.assertGreaterEqual(monitor.max_usage() - monitor.min_usage(), 0.5)