diff --git a/messaging/msgq.cc b/messaging/msgq.cc
index af93bbf..abbefe7 100644
--- a/messaging/msgq.cc
+++ b/messaging/msgq.cc
@@ -105,6 +105,13 @@ int msgq_new_queue(msgq_queue_t * q, const char * path, size_t size){
     close(fd);
     return -1;
   }
+
+  rc = fallocate(fd, 0, 0, size + sizeof(msgq_header_t));
+  if (rc < 0){
+    close(fd);
+    return -1;
+  }
+
   char * mem = (char*)mmap(NULL, size + sizeof(msgq_header_t), PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
   close(fd);