diff --git a/plugins/sudoers/def_data.c b/plugins/sudoers/def_data.c
index 0014b15c0..fd04b2195 100644
--- a/plugins/sudoers/def_data.c
+++ b/plugins/sudoers/def_data.c
@@ -191,11 +191,11 @@ struct sudo_defs_types sudo_defs_table[] = {
 	NULL,
     }, {
 	"timestamp_timeout", T_TIMESPEC|T_BOOL,
-	N_("Authentication timestamp timeout: %.1f minutes"),
+	N_("Authentication timestamp timeout: %d.%d minutes"),
 	NULL,
     }, {
 	"passwd_timeout", T_TIMESPEC|T_BOOL,
-	N_("Password prompt timeout: %.1f minutes"),
+	N_("Password prompt timeout: %d.%d minutes"),
 	NULL,
     }, {
 	"passwd_tries", T_UINT,
diff --git a/plugins/sudoers/def_data.in b/plugins/sudoers/def_data.in
index fa0050de9..62be675fc 100644
--- a/plugins/sudoers/def_data.in
+++ b/plugins/sudoers/def_data.in
@@ -115,10 +115,10 @@ loglinelen
 	"Length at which to wrap log file lines (0 for no wrap): %u"
 timestamp_timeout
 	T_TIMESPEC|T_BOOL
-	"Authentication timestamp timeout: %.1f minutes"
+	"Authentication timestamp timeout: %d.%d minutes"
 passwd_timeout
 	T_TIMESPEC|T_BOOL
-	"Password prompt timeout: %.1f minutes"
+	"Password prompt timeout: %d.%d minutes"
 passwd_tries
 	T_UINT
 	"Number of tries to enter a password: %u"
diff --git a/plugins/sudoers/defaults.c b/plugins/sudoers/defaults.c
index 0488f5e34..880a92057 100644
--- a/plugins/sudoers/defaults.c
+++ b/plugins/sudoers/defaults.c
@@ -130,10 +130,12 @@ dump_defaults(void)
 		    sudo_printf(SUDO_CONV_INFO_MSG, "\n");
 		    break;
 		case T_TIMESPEC: {
-		    /* display timespec in minutes as a double */
-		    double d = (double)cur->sd_un.tspec.tv_sec +
-			((double)cur->sd_un.tspec.tv_nsec / 1000000000.0);
-		    sudo_printf(SUDO_CONV_INFO_MSG, desc, d / 60.0);
+		    /* display timespec in minutes and 10ths of a minute */
+		    const int min = cur->sd_un.tspec.tv_sec / 60;
+		    int decimin =
+			(((cur->sd_un.tspec.tv_sec % 60) * 10) + 30) / 60;
+		    decimin += cur->sd_un.tspec.tv_nsec / 100000000;
+		    sudo_printf(SUDO_CONV_INFO_MSG, desc, min, decimin);
 		    sudo_printf(SUDO_CONV_INFO_MSG, "\n");
 		    break;
 		}