diff --git a/lldb/source/Target/TargetProperties.td b/lldb/source/Target/TargetProperties.td
index 7bb5bd53688b1..0f68deb543f90 100644
--- a/lldb/source/Target/TargetProperties.td
+++ b/lldb/source/Target/TargetProperties.td
@@ -102,7 +102,7 @@ let Definition = "target" in {
     DefaultUnsignedValue<1024>,
     Desc<"Maximum number of characters to show when using %s in summary strings.">;
   def MaxMemReadSize: Property<"max-memory-read-size", "UInt64">,
-    DefaultUnsignedValue<1024>,
+    DefaultUnsignedValue<0xffffffff>,
     Desc<"Maximum number of bytes that 'memory read' will fetch before --force must be specified.">;
   def BreakpointUseAvoidList: Property<"breakpoints-use-platform-avoid-list", "Boolean">,
     DefaultTrue,
diff --git a/lldb/test/API/functionalities/memory/big-read/TestMemoryReadMaximumSize.py b/lldb/test/API/functionalities/memory/big-read/TestMemoryReadMaximumSize.py
index 259fde71a6362..1bc227dfce9be 100644
--- a/lldb/test/API/functionalities/memory/big-read/TestMemoryReadMaximumSize.py
+++ b/lldb/test/API/functionalities/memory/big-read/TestMemoryReadMaximumSize.py
@@ -22,6 +22,8 @@ def test_memory_read_max_setting(self):
         )
         self.assertTrue(self.bp.IsValid())
 
+        self.runCmd("settings set target.max-memory-read-size 1024")
+
         self.expect(
             "mem rea -f x -s 4 -c 2048 `&c`",
             error=True,