diff --git a/src/lib/wallclock/tm_cvt.c b/src/lib/wallclock/tm_cvt.c
index cf73cc542c..63f92bff24 100644
--- a/src/lib/wallclock/tm_cvt.c
+++ b/src/lib/wallclock/tm_cvt.c
@@ -8,6 +8,7 @@
 #include "lib/cc/compat_compiler.h"
 #include "lib/wallclock/tm_cvt.h"
 #include "lib/string/printf.h"
+#include "lib/err/torerr.h"
 
 #include <errno.h>
 #include <time.h>