diff --git a/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp b/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp
index 12c1b8f..1c397b5 100644
--- a/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp
+++ b/llvm/lib/Target/AArch64/Disassembler/AArch64Disassembler.cpp
@@ -208,7 +208,7 @@
   uint8_t bytes[4];
 
   // We want to read exactly 4 bytes of data.
-  if (Region.readBytes(Address, 4, (uint8_t*)bytes, NULL) == -1) {
+  if (Region.readBytes(Address, 4, bytes) == -1) {
     Size = 0;
     return MCDisassembler::Fail;
   }