diff --git a/src/timer.cpp b/src/timer.cpp
index a0532a1..b2fb1e9 100644
--- a/src/timer.cpp
+++ b/src/timer.cpp
@@ -12,8 +12,8 @@ void sc::timer::callback(union sigval sv) {
 }
 
 void sc::timer::setup_timer(double time, bool repeat) {
-    time_t secs = floor(time / 1000);
-    long ns = (time - 1000 * secs) * 1000000;
+    time_t secs = floor(time);
+    long ns = (time - secs) * 1000000;
     struct itimerspec its;
     its.it_value.tv_sec = secs;
     its.it_value.tv_nsec = ns;