Index: uspace/lib/c/arch/riscv64/src/stacktrace.c
===================================================================
--- uspace/lib/c/arch/riscv64/src/stacktrace.c	(revision 8d2dd7f2d52fbc7693f94b66e451eeff3756d061)
+++ uspace/lib/c/arch/riscv64/src/stacktrace.c	(revision 1a2227dd48e5aa6c8c9a405d3d2af5380b443736)
@@ -55,10 +55,10 @@
 uintptr_t stacktrace_fp_get(void)
 {
-	return (uintptr_t) NULL;
+	return 0;
 }
 
 uintptr_t stacktrace_pc_get(void)
 {
-	return (uintptr_t) NULL;
+	return 0;
 }