diff --git a/internal/ui/termstatus/background_linux.go b/internal/ui/termstatus/background_linux.go
index 2c32faf17..db96c2c53 100644
--- a/internal/ui/termstatus/background_linux.go
+++ b/internal/ui/termstatus/background_linux.go
@@ -18,6 +18,10 @@ func IsProcessBackground(fd uintptr) bool {
 }
 
 func isProcessBackground(fd uintptr) (bool, error) {
-	pid, err := unix.IoctlGetInt(int(fd), unix.TIOCGPGRP)
-	return pid != unix.Getpgrp(), err
+	// We need to use IoctlGetUint32 here, because pid_t is 32-bit even on
+	// 64-bit Linux. IoctlGetInt doesn't work on big-endian platforms:
+	// https://github.com/golang/go/issues/45585
+	// https://github.com/golang/go/issues/60429
+	pid, err := unix.IoctlGetUint32(int(fd), unix.TIOCGPGRP)
+	return int(pid) != unix.Getpgrp(), err
 }