diff --git a/example/fir_filter_ex.cpp b/example/fir_filter_ex.cpp
index 72745f4..26ce0ab 100644
--- a/example/fir_filter_ex.cpp
+++ b/example/fir_filter_ex.cpp
@@ -56,8 +56,9 @@ int main(int argc, char const *argv[]) try
     double f3_demo = 15.0;
 
     // Create input signal
-    gctl::array<double> t, signal(10.13*fs);
-    gctl::linespace(0.0, 10.13, 10.13*fs, t);
+    int snum = int(10.13*fs);
+    gctl::array<double> t(snum), signal(snum);
+    t.sequence(0.0, 10.13/(snum - 1));
 
     for (size_t i = 0; i < t.size(); i++)
     {