diff --git a/services/comm.cpp b/services/comm.cpp
index d32b51f12..795c6957f 100644
--- a/services/comm.cpp
+++ b/services/comm.cpp
@@ -24,6 +24,7 @@
 
 #include <config.h>
 
+#include <signal.h>
 #include <sys/types.h>
 #include <netinet/in.h>
 #include <sys/socket.h>