1 files changed, 2 insertions, 0 deletions
diff --git a/ifne.c b/ifne.c
index d8ecea9..a58e342 100644
--- a/ifne.c
+++ b/ifne.c
@@ -23,6 +23,8 @@
 #include <sys/wait.h>
 #include <sys/types.h>
 #include <string.h>
+#include <signal.h> /* raise() */
+
 #define streq(a, b) (!strcmp((a), (b)))
 
 static void stdin_to_stream(char *buf, ssize_t r, FILE *outf) {