diff --git a/src/meas_lat.c b/src/meas_lat.c
index 2a0fa2c..ebf39be 100644
--- a/src/meas_lat.c
+++ b/src/meas_lat.c
@@ -96,6 +96,7 @@ int on_timer(struct evt_core_ctx* ctx, struct evt_core_fdinfo* fdinfo) {
   struct measure_conf* mc = fdinfo->other;
 
   s = read(fdinfo->fd, &ticks, sizeof(uint64_t));
+  if (s == -1 && errno == EAGAIN) return 0;
   if (s != sizeof(uint64_t)) {
     perror("Read error");
     exit(EXIT_FAILURE);
@@ -124,7 +125,7 @@ int on_timer(struct evt_core_ctx* ctx, struct evt_core_fdinfo* fdinfo) {
     perror("Send error");
     //exit(EXIT_FAILURE);
   }
-  return 1;
+  return 0;
 }