diff --git a/defs.h b/defs.h
index 3f07c4f3..fbbe48cf 100644
--- a/defs.h
+++ b/defs.h
@@ -227,16 +227,14 @@ extern long ptrace(int, int, char *, long);
 # define PTRACE_POKEUSER PTRACE_POKEUSR
 #endif
 
-#if USE_SEIZE
-# undef PTRACE_SEIZE
-# define PTRACE_SEIZE		0x4206
-# undef PTRACE_INTERRUPT
-# define PTRACE_INTERRUPT	0x4207
-# undef PTRACE_LISTEN
-# define PTRACE_LISTEN		0x4208
-# undef PTRACE_EVENT_STOP
-# define PTRACE_EVENT_STOP	128
-#endif
+#undef PTRACE_SEIZE
+#define PTRACE_SEIZE		0x4206
+#undef PTRACE_INTERRUPT
+#define PTRACE_INTERRUPT	0x4207
+#undef PTRACE_LISTEN
+#define PTRACE_LISTEN		0x4208
+#undef PTRACE_EVENT_STOP
+#define PTRACE_EVENT_STOP	128
 
 #ifdef ALPHA
 # define REG_R0 0
diff --git a/strace.c b/strace.c
index 6eab600f..87aad485 100644
--- a/strace.c
+++ b/strace.c
@@ -724,7 +724,7 @@ droptcb(struct tcb *tcp)
 	memset(tcp, 0, sizeof(*tcp));
 }
 
-/* detach traced process; continue with sig
+/* Detach traced process.
  * Never call DETACH twice on the same process as both unattached and
  * attached-unstopped processes give the same ESRCH.  For unattached process we
  * would SIGSTOP it and wait for its SIGSTOP notification forever.
@@ -2252,7 +2252,6 @@ trace(void)
 				goto restart_tracee;
 
 			/* It's group-stop */
-#if USE_SEIZE
 			if (use_seize) {
 				/*
 				 * This ends ptrace-stop, but does *not* end group-stop.
@@ -2266,7 +2265,6 @@ trace(void)
 				continue;
 			}
 			/* We don't have PTRACE_LISTEN support... */
-#endif
 			goto restart_tracee;
 		}