diff --git a/fastboot/device/commands.cpp b/fastboot/device/commands.cpp
index 3f663ef..042e337 100644
--- a/fastboot/device/commands.cpp
+++ b/fastboot/device/commands.cpp
@@ -165,7 +165,7 @@
     }
     // arg[0] is the command name, arg[1] contains size of data to be downloaded
     unsigned int size;
-    if (!android::base::ParseUint("0x" + args[1], &size, UINT_MAX)) {
+    if (!android::base::ParseUint("0x" + args[1], &size, kMaxDownloadSizeDefault)) {
         return device->WriteStatus(FastbootResult::FAIL, "Invalid size");
     }
     device->download_data().resize(size);
diff --git a/fastboot/device/commands.h b/fastboot/device/commands.h
index 9df43a9..bb1f988 100644
--- a/fastboot/device/commands.h
+++ b/fastboot/device/commands.h
@@ -19,6 +19,8 @@
 #include <string>
 #include <vector>
 
+constexpr unsigned int kMaxDownloadSizeDefault = 0x20000000;
+
 class FastbootDevice;
 
 enum class FastbootResult {
diff --git a/fastboot/device/variables.cpp b/fastboot/device/variables.cpp
index 2de79b1..630e22d 100644
--- a/fastboot/device/variables.cpp
+++ b/fastboot/device/variables.cpp
@@ -36,7 +36,6 @@
 using ::android::hardware::fastboot::V1_0::Result;
 using ::android::hardware::fastboot::V1_0::Status;
 
-constexpr int kMaxDownloadSizeDefault = 0x20000000;
 constexpr char kFastbootProtocolVersion[] = "0.4";
 
 bool GetVersion(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,