diff --git a/meson.build b/meson.build
index b429dd8..3aebdd0 100644
--- a/meson.build
+++ b/meson.build
@@ -5,7 +5,6 @@
             'warning_level=3',
             'werror=true',
             'cpp_std=c++14',
-            'cpp_args=-Wno-unused-parameter'
        ])
 
 #-------------------------------------------------------------------------------
diff --git a/src/register/hei_operator_register.hpp b/src/register/hei_operator_register.hpp
index 5c225b1..5e40358 100644
--- a/src/register/hei_operator_register.hpp
+++ b/src/register/hei_operator_register.hpp
@@ -381,7 +381,7 @@
     ConstantRegister& operator=(const ConstantRegister& r) = delete;
 
     /** @brief Overloaded from parent class. */
-    const BitString* getBitString(const Chip& i_chip) const override
+    const BitString* getBitString(const Chip&) const override
     {
         return &iv_result;
     }