diff --git a/libs/utils/file_backup_helper.cpp b/libs/utils/file_backup_helper.cpp
index 16cbb6e..111f88d 100644
--- a/libs/utils/file_backup_helper.cpp
+++ b/libs/utils/file_backup_helper.cpp
@@ -13,6 +13,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <utime.h>
 #include <fcntl.h>
 #include <zlib.h>
 
@@ -224,7 +225,8 @@
         }
 
         s.modTime_sec = st.st_mtime;
-        s.modTime_nsec = st.st_mtime_nsec;
+        s.modTime_nsec = 0; // workaround sim breakage
+        //s.modTime_nsec = st.st_mtime_nsec;
         s.size = st.st_size;
         s.crc32 = compute_crc32(realFilename);