diff --git a/src/emulator/syscalls.cpp b/src/emulator/syscalls.cpp
index b10f81c7..fa91ad6c 100644
--- a/src/emulator/syscalls.cpp
+++ b/src/emulator/syscalls.cpp
@@ -125,7 +125,7 @@ namespace
 		uc.reg<uint64_t>(UC_X86_REG_RAX, STATUS_SUCCESS);
 	}
 
-	void handle_NtQuerySystemInformation(const unicorn& uc, const process_context& context)
+	void handle_NtQuerySystemInformation(const unicorn& uc)
 	{
 		const auto info_class = uc.reg<uint32_t>(UC_X86_REG_R10D);
 		const auto system_information = uc.reg(UC_X86_REG_RDX);
@@ -175,7 +175,7 @@ namespace
 		uc.reg<uint64_t>(UC_X86_REG_RAX, STATUS_SUCCESS);
 	}
 
-	void handle_NtQueryProcessInformation(const unicorn& uc, const process_context& context)
+	void handle_NtQueryProcessInformation(const unicorn& uc)
 	{
 		const auto process_handle = uc.reg<uint64_t>(UC_X86_REG_R10);
 		const auto info_class = uc.reg<uint32_t>(UC_X86_REG_EDX);
@@ -398,7 +398,7 @@ void handle_syscall(const unicorn& uc, process_context& context)
 			handle_NtFreeVirtualMemory(uc);
 			break;
 		case 0x19:
-			handle_NtQueryProcessInformation(uc, context);
+			handle_NtQueryProcessInformation(uc);
 			break;
 		case 0x23:
 			handle_NtQueryVirtualMemory(uc, context);
@@ -407,7 +407,7 @@ void handle_syscall(const unicorn& uc, process_context& context)
 			handle_NtQueryPerformanceCounter(uc);
 			break;
 		case 0x36:
-			handle_NtQuerySystemInformation(uc, context);
+			handle_NtQuerySystemInformation(uc);
 			break;
 		case 0x48:
 			handle_NtCreateEvent(uc, context);
diff --git a/src/emulator/unicorn.hpp b/src/emulator/unicorn.hpp
index 4ec5efc6..7d0315b3 100644
--- a/src/emulator/unicorn.hpp
+++ b/src/emulator/unicorn.hpp
@@ -50,9 +50,10 @@ public:
 		return value;
 	}
 
-	template <typename T = uint64_t>
-	void reg(const int regid, const T& value) const
+	template <typename T = uint64_t, typename S>
+	void reg(const int regid, const S& maybe_value) const
 	{
+		T value = static_cast<T>(maybe_value);
 		e(uc_reg_write(this->uc_, regid, &value));
 	}