diff --git a/Userland/Libraries/LibJIT/X86_64/Assembler.h b/Userland/Libraries/LibJIT/X86_64/Assembler.h
index e43db2e6fd..0e049399e5 100644
--- a/Userland/Libraries/LibJIT/X86_64/Assembler.h
+++ b/Userland/Libraries/LibJIT/X86_64/Assembler.h
@@ -731,7 +731,7 @@ struct X86_64Assembler {
     }
 
     void native_call(
-        void* callee,
+        u64 callee,
         Vector<Operand> const& preserved_registers = {},
         Vector<Operand> const& stack_arguments = {})
     {
@@ -746,14 +746,14 @@ struct X86_64Assembler {
             push(stack_argument);
 
         // load callee into RAX
-        mov(Operand::Register(Reg::RAX), Operand::Imm(bit_cast<u64>(callee)));
+        mov(Operand::Register(Reg::RAX), Operand::Imm(callee));
 
         // call RAX
         emit8(0xff);
         emit_modrm_slash(2, Operand::Register(Reg::RAX));
 
         if (!stack_arguments.is_empty() || needs_aligning)
-            add(Operand::Register(Reg::RSP), Operand::Imm((stack_arguments.size() + (needs_aligning ? 1 : 0)) * sizeof(void*)));
+            add(Operand::Register(Reg::RSP), Operand::Imm((stack_arguments.size() + (needs_aligning ? 1 : 0)) * sizeof(u64)));
 
         for (auto const& reg : preserved_registers)
             pop(reg);
diff --git a/Userland/Libraries/LibJS/JIT/Compiler.cpp b/Userland/Libraries/LibJS/JIT/Compiler.cpp
index 29743b2e0e..ad73943087 100644
--- a/Userland/Libraries/LibJS/JIT/Compiler.cpp
+++ b/Userland/Libraries/LibJS/JIT/Compiler.cpp
@@ -1919,7 +1919,7 @@ void Compiler::native_call(void* function_address, Vector<Assembler::Operand> co
 {
     // NOTE: We don't preserve caller-saved registers when making a native call.
     //       This means that they may have changed after we return from the call.
-    m_assembler.native_call(function_address, { Assembler::Operand::Register(ARG0) }, stack_arguments);
+    m_assembler.native_call(bit_cast<u64>(function_address), { Assembler::Operand::Register(ARG0) }, stack_arguments);
 }
 
 OwnPtr<NativeExecutable> Compiler::compile(Bytecode::Executable& bytecode_executable)