diff --git a/deps/rust-tpm-20-ref/smallc/src/time.c b/deps/rust-tpm-20-ref/smallc/src/time.c
index ed46401..720eddd 100644
--- a/deps/rust-tpm-20-ref/smallc/src/time.c
+++ b/deps/rust-tpm-20-ref/smallc/src/time.c
@@ -1,5 +1,6 @@
 #include <time.h>
 #include <errno.h>
+#include <assert.h>
 
 const char __utc[] = "UTC";
 
@@ -31,3 +32,18 @@ struct tm *gmtime(const time_t *t)
 	tm.__tm_zone = __utc;
 	return &tm;
 }
+
+// Add an empty implementation for gettimeofday
+struct timeval {
+  long tv_sec;      /* time value, in seconds */
+  long tv_usec;     /* time value, in microseconds */
+};
+struct timezone {
+	int	tz_minuteswest;	/* minutes west of Greenwich */
+	int	tz_dsttime;	/* type of dst correction */
+};
+
+int gettimeofday ( struct timeval * tv , struct timezone * tz ){
+  assert(0);
+  return 1;
+}