diff --git a/src/zm_comms.cpp b/src/zm_comms.cpp
index 45385aa2f..f7d3818f8 100644
--- a/src/zm_comms.cpp
+++ b/src/zm_comms.cpp
@@ -25,7 +25,11 @@
 #include <fcntl.h>
 #include <stdarg.h>
 //#include <memory.h>
+#if defined(BSD)
+#include <stdlib.h>
+#else
 #include <alloca.h>
+#endif
 //#include <unistd.h>
 #include <sys/ioctl.h>
 #include <sys/param.h>