diff --git a/sysdeps/linux-gnu/arm/dwarf-arm.c b/sysdeps/linux-gnu/arm/dwarf-arm.c
index 87955dd..ce665a4 100644
--- a/sysdeps/linux-gnu/arm/dwarf-arm.c
+++ b/sysdeps/linux-gnu/arm/dwarf-arm.c
@@ -153,6 +153,7 @@ static int is_signal_frame(struct dwarf_cursor *c)
 
 int dwarf_arch_map_reg(struct dwarf_addr_space *as, unsigned int reg)
 {
+	(void)(as);
 	if (reg >= ARRAY_SIZE(dwarf_to_regnum_map))
 		return -DWARF_EBADREG;
 
@@ -182,6 +183,8 @@ static inline int access_mem(struct dwarf_addr_space *as, arch_addr_t addr, void
 		if (addr >= ARCH_ADDR_T(libref->mmap_addr + libref->mmap_size))
 			fatal("invalid access mem: addr %#lx >= %p", addr, libref->mmap_addr + libref->mmap_size);
 	}
+#else
+	(void)(as);
 #endif
 
 	memcpy(valp, (void *)addr, size);
@@ -647,6 +650,8 @@ int dwarf_arch_step(struct dwarf_addr_space *as)
 
 int dwarf_arch_check_call(struct dwarf_addr_space *as, arch_addr_t ip)
 {
+	(void)(as);
+	(void)(ip);
 	return 1;
 }