diff --git a/NEWS b/NEWS
index d23544ac3..52b999a3a 100644
--- a/NEWS
+++ b/NEWS
@@ -7,6 +7,7 @@ ver 0.18.9 (not yet released)
   - vorbis: fix another linker failure
 * output
   - pipe: fix hanging child process due to blocked signals
+* fix build failure due to missing signal.h include
 
 ver 0.18.8 (2014/02/07)
 * decoder
diff --git a/src/event/SignalMonitor.cxx b/src/event/SignalMonitor.cxx
index eda52aba1..4f5174377 100644
--- a/src/event/SignalMonitor.cxx
+++ b/src/event/SignalMonitor.cxx
@@ -43,6 +43,8 @@
 #include <pthread.h>
 #endif
 
+#include <signal.h>
+
 class SignalMonitor final : private SocketMonitor {
 #ifdef USE_SIGNALFD
 	SignalFD fd;