diff --git a/src/Tests.cpp b/src/Tests.cpp
index a46d441..efa109e 100644
--- a/src/Tests.cpp
+++ b/src/Tests.cpp
@@ -1981,8 +1981,8 @@ static void TestBasics()
 
 void TestHeapSizeLimit()
 {
-    const VkDeviceSize HEAP_SIZE_LIMIT = 1ull * 1024 * 1024 * 1024; // 1 GB
-    const VkDeviceSize BLOCK_SIZE      = 128ull * 1024 * 1024;      // 128 MB
+    const VkDeviceSize HEAP_SIZE_LIMIT = 200ull * 1024 * 1024; // 200 MB
+    const VkDeviceSize BLOCK_SIZE      =  20ull * 1024 * 1024; // 20 MB
 
     VkDeviceSize heapSizeLimit[VK_MAX_MEMORY_HEAPS];
     for(uint32_t i = 0; i < VK_MAX_MEMORY_HEAPS; ++i)