diff --git a/include/zinnia/time.h b/include/zinnia/time.h
index e4ebd31..621b83a 100644
--- a/include/zinnia/time.h
+++ b/include/zinnia/time.h
@@ -2,6 +2,16 @@
 
 #include <uapi/time.h>
 
-struct timespec time_from_sec(uint64_t sec);
-struct timespec time_from_nano(uint64_t nsec);
-struct timespec time_from_milli(uint64_t msec);
+typedef struct __timespec timespec_t;
+
+static inline timespec_t time_from_sec(uint64_t sec) {
+    return (timespec_t){.tv_sec = sec, .tv_nsec = 0};
+}
+
+static inline timespec_t time_from_nano(uint64_t nsec) {
+    return (timespec_t){.tv_sec = nsec / 1'000'000'000, .tv_nsec = nsec % 1'000'000'000};
+}
+
+static inline timespec_t time_from_milli(uint64_t msec) {
+    return (timespec_t){.tv_sec = msec / 1'000, .tv_nsec = (msec % 1'000) * 1'000'000};
+}