diff --git a/tests/python/test_trace2.py b/tests/python/test_trace2.py
index 1210c4ec0acc..92a60fcfc1a9 100755
--- a/tests/python/test_trace2.py
+++ b/tests/python/test_trace2.py
@@ -15,7 +15,11 @@
 BPF_TABLE("hash", struct Ptr, struct Counters, stats, 1024);
 
 int count_sched(struct pt_regs *ctx) {
+#if defined(__powerpc__)
+  struct Ptr key = {.ptr=ctx->gpr[3]};
+#else
   struct Ptr key = {.ptr=ctx->bx};
+#endif
   struct Counters zleaf = {0};
   stats.lookup_or_init(&key, &zleaf)->stat1++;
   return 0;
diff --git a/tests/python/test_trace3.c b/tests/python/test_trace3.c
index 7e1f8d284d73..50ec3a2964ed 100644
--- a/tests/python/test_trace3.c
+++ b/tests/python/test_trace3.c
@@ -28,14 +28,22 @@ static u32 log2l(u64 v) {
 }
 
 int probe_blk_start_request(struct pt_regs *ctx) {
+#if defined(__powerpc__)
+  struct Request rq = {.rq = ctx->gpr[3]};
+#else
   struct Request rq = {.rq = ctx->di};
+#endif
   struct Time tm = {.start = bpf_ktime_get_ns()};
   requests.update(&rq, &tm);
   return 0;
 }
 
 int probe_blk_update_request(struct pt_regs *ctx) {
+#if defined(__powerpc__)
+  struct Request rq = {.rq = ctx->gpr[3]};
+#else
   struct Request rq = {.rq = ctx->di};
+#endif
   struct Time *tm = requests.lookup(&rq);
   if (!tm) return 0;
   u64 delta = bpf_ktime_get_ns() - tm->start;