diff --git a/dv/uvm/core_ibex/Makefile b/dv/uvm/core_ibex/Makefile
index 31e87cf8..e6b6ede5 100644
--- a/dv/uvm/core_ibex/Makefile
+++ b/dv/uvm/core_ibex/Makefile
@@ -2,6 +2,8 @@
 # Licensed under the Apache License, Version 2.0, see LICENSE for details.
 # SPDX-License-Identifier: Apache-2.0
 
+.SUFFIXES:
+
 GEN_DIR             := $(realpath ../../../vendor/google_riscv-dv)
 TOOLCHAIN           := ${RISCV_TOOLCHAIN}
 export IBEX_ROOT    := $(realpath ../../../)