diff --git a/lib/format1/import-export.c b/lib/format1/import-export.c
index c17403127..c29527b67 100644
--- a/lib/format1/import-export.c
+++ b/lib/format1/import-export.c
@@ -128,8 +128,8 @@ int import_pv(const struct format_type *fmt, struct dm_pool *mem,
 int generate_lvm1_system_id(struct cmd_context *cmd, char *s, const char *prefix)
 {
 
-	if (dm_snprintf(s, NAME_LEN, "%s%s%lu",
-			 prefix, cmd->hostname, time(NULL)) < 0) {
+	if (dm_snprintf(s, NAME_LEN, "%s%s" FMTu64,
+			prefix, cmd->hostname, (uint64_t)time(NULL)) < 0) {
 		log_error("Generated LVM1 format system_id too long");
 		return 0;
 	}
diff --git a/lib/format_text/export.c b/lib/format_text/export.c
index 899ff45cb..473275d4c 100644
--- a/lib/format_text/export.c
+++ b/lib/format_text/export.c
@@ -350,7 +350,7 @@ static int _print_header(struct cmd_context *cmd, struct formatter *f,
 	     _utsname.version, _utsname.machine);
 	if (cmd->system_id && *cmd->system_id)
 		outf(f, "creation_host_system_id = \"%s\"", cmd->system_id);
-	outf(f, "creation_time = %lu\t# %s", t, ctime(&t));
+	outf(f, "creation_time = " FMTu64 "\t# %s", (uint64_t)t, ctime(&t));
 
 	return 1;
 }
diff --git a/lib/report/report.c b/lib/report/report.c
index 1421b31fa..d9880b206 100644
--- a/lib/report/report.c
+++ b/lib/report/report.c
@@ -1008,7 +1008,7 @@ static int _translate_time_items(struct dm_report *rh, struct time_info *info,
 	dm_pool_free(info->mem, info->ti_list);
 	info->ti_list = NULL;
 
-	if (dm_snprintf(buf, sizeof(buf), "@%ld:@%ld", t1, t2) == -1) {
+	if (dm_snprintf(buf, sizeof(buf), "@" FMTd64 ":@" FMTd64, (int64_t)t1, (int64_t)t2) == -1) {
 		log_error("_translate_time_items: dm_snprintf failed");
 		return 0;
 	}
@@ -1063,10 +1063,10 @@ static void *_lv_time_handler_get_dynamic_value(struct dm_report *rh,
 						struct dm_pool *mem,
 						const char *data_in)
 {
-	time_t t1, t2;
+	int64_t t1, t2;
 	time_t *result;
 
-	if (sscanf(data_in, "@%ld:@%ld", &t1, &t2) != 2) {
+	if (sscanf(data_in, "@" FMTd64 ":@" FMTd64, &t1, &t2) != 2) {
 		log_error("Failed to get value for parsed time specification.");
 		return NULL;
 	}
@@ -1076,8 +1076,8 @@ static void *_lv_time_handler_get_dynamic_value(struct dm_report *rh,
 		return NULL;
 	}
 
-	result[0] = t1;
-	result[1] = t2;
+	result[0] = (time_t) t1; /* Validate range for 32b arch ? */
+	result[1] = (time_t) t2;
 
 	return result;
 }