diff --git a/sampler.go b/sampler.go
index 2360f0d..7b0923e 100644
--- a/sampler.go
+++ b/sampler.go
@@ -46,8 +46,12 @@ type BasicSampler struct {
 
 // Sample implements the Sampler interface.
 func (s *BasicSampler) Sample(lvl Level) bool {
+	n := s.N
+	if n == 1 {
+		return true
+	}
 	c := atomic.AddUint32(&s.counter, 1)
-	return c%s.N == s.N-1
+	return c%n == 1
 }
 
 // BurstSampler lets Burst events pass per Period then pass the decision to