diff --git a/Libraries/LibX86/Instruction.h b/Libraries/LibX86/Instruction.h
index ed6642d393..10eddac2bc 100644
--- a/Libraries/LibX86/Instruction.h
+++ b/Libraries/LibX86/Instruction.h
@@ -319,7 +319,7 @@ public:
 
     u8 cc() const { return m_has_sub_op ? m_sub_op & 0xf : m_op & 0xf; }
 
-    String to_string(u32 origin, bool x32) const;
+    String to_string(u32 origin, bool x32 = true) const;
 
 private:
     Instruction(InstructionStream&, bool o32, bool a32);
diff --git a/Userland/disasm.cpp b/Userland/disasm.cpp
index ab6cfe48bf..6b00f3cc39 100644
--- a/Userland/disasm.cpp
+++ b/Userland/disasm.cpp
@@ -20,7 +20,7 @@ int main(int argc, char** argv)
         auto insn = disassembler.next();
         if (!insn.has_value())
             break;
-        out() << String::format("%08x", offset) << "  " << insn.value().to_string(offset, true);
+        out() << String::format("%08x", offset) << "  " << insn.value().to_string(offset);
     }
 
     return 0;