diff --git a/incl/iss/arch/riscv_hart_m_p.h b/incl/iss/arch/riscv_hart_m_p.h
index 4405b28..d54fd57 100644
--- a/incl/iss/arch/riscv_hart_m_p.h
+++ b/incl/iss/arch/riscv_hart_m_p.h
@@ -415,8 +415,6 @@ riscv_hart_m_p<BASE, FEAT>::riscv_hart_m_p()
     csr_rd_cb[mie] = &this_class::read_ie;
     csr_wr_cb[mie] = &this_class::write_ie;
     csr_rd_cb[mhartid] = &this_class::read_hartid;
-    csr_rd_cb[mcounteren] = &this_class::read_null;
-    csr_wr_cb[mcounteren] = &this_class::write_null;
     csr_wr_cb[misa] = &this_class::write_null;
     csr_wr_cb[mvendorid] = &this_class::write_null;
     csr_wr_cb[marchid] = &this_class::write_null;