diff --git a/tools/oomkill.py b/tools/oomkill.py
index 4f3b6ce75960..298e35363a25 100755
--- a/tools/oomkill.py
+++ b/tools/oomkill.py
@@ -26,8 +26,8 @@
 #include <linux/oom.h>
 
 struct data_t {
-    u64 fpid;
-    u64 tpid;
+    u32 fpid;
+    u32 tpid;
     u64 pages;
     char fcomm[TASK_COMM_LEN];
     char tcomm[TASK_COMM_LEN];
@@ -40,7 +40,7 @@
     unsigned long totalpages;
     struct task_struct *p = oc->chosen;
     struct data_t data = {};
-    u32 pid = bpf_get_current_pid_tgid();
+    u32 pid = bpf_get_current_pid_tgid() >> 32;
     data.fpid = pid;
     data.tpid = p->pid;
     data.pages = oc->totalpages;