1 files changed, 1 insertions, 0 deletions
diff --git a/entropy.c b/entropy.c
index 4f19c876..ccabb136 100644
--- a/entropy.c
+++ b/entropy.c
@@ -36,6 +36,7 @@
 #endif
 #include <stdarg.h>
 #include <unistd.h>
+#include <signal.h>
 
 #include <openssl/rand.h>
 #include <openssl/crypto.h>