diff --git a/src/xz/signals.c b/src/xz/signals.c
index b27cd5b5..807b0225 100644
--- a/src/xz/signals.c
+++ b/src/xz/signals.c
@@ -16,7 +16,7 @@
 volatile sig_atomic_t user_abort = false;
 
 
-#ifndef _WIN32
+#if !(defined(_WIN32) && !defined(__CYGWIN__))
 
 /// If we were interrupted by a signal, we store the signal number so that
 /// we can raise that signal to kill the program when all cleanups have
diff --git a/src/xz/signals.h b/src/xz/signals.h
index 7603d803..5b125e0f 100644
--- a/src/xz/signals.h
+++ b/src/xz/signals.h
@@ -21,7 +21,7 @@ extern volatile sig_atomic_t user_abort;
 extern void signals_init(void);
 
 
-#if defined(_WIN32) || defined(__VMS)
+#if (defined(_WIN32) && !defined(__CYGWIN__)) || defined(__VMS)
 #	define signals_block() do { } while (0)
 #	define signals_unblock() do { } while (0)
 #else
@@ -34,7 +34,7 @@ extern void signals_block(void);
 extern void signals_unblock(void);
 #endif
 
-#ifdef _WIN32
+#if defined(_WIN32) && !defined(__CYGWIN__)
 #	define signals_exit() do { } while (0)
 #else
 /// If user has sent us a signal earlier to terminate the process,