diff --git a/tests/arch/riscv/pmp/clear-pmp-unlocked-entries/src/main.c b/tests/arch/riscv/pmp/clear-pmp-unlocked-entries/src/main.c
index c36d07c5216c5..0d401f43ac425 100644
--- a/tests/arch/riscv/pmp/clear-pmp-unlocked-entries/src/main.c
+++ b/tests/arch/riscv/pmp/clear-pmp-unlocked-entries/src/main.c
@@ -7,8 +7,6 @@
 #include <zephyr/tc_util.h>
 #include <zephyr/ztest.h>
 
-void z_riscv_pmp_read_config(unsigned long *pmp_cfg, size_t pmp_cfg_size);
-
 /* Checks if the Machine Privilege Register Virtualization (MPRV) bit in mstatus is 1 (enabled). */
 static bool riscv_mprv_is_enabled(void)
 {