diff --git a/src/unicorn-emulator/unicorn_x64_emulator.cpp b/src/unicorn-emulator/unicorn_x64_emulator.cpp
index f6848195..bbcb2a8e 100644
--- a/src/unicorn-emulator/unicorn_x64_emulator.cpp
+++ b/src/unicorn-emulator/unicorn_x64_emulator.cpp
@@ -242,6 +242,7 @@ namespace unicorn
 			unicorn_x64_emulator()
 			{
 				uce(uc_open(UC_ARCH_X86, UC_MODE_64, &this->uc_));
+				uce(uc_ctl_set_tcg_buffer_size(this->uc_, 2 << 30 /* 2 gb */));
 			}
 
 			~unicorn_x64_emulator() override