diff --git a/examples/src/03-01.zig b/examples/src/03-01.zig
index f92956c..1eb9488 100644
--- a/examples/src/03-01.zig
+++ b/examples/src/03-01.zig
@@ -15,6 +15,6 @@ pub fn main() !void {
     const elapsed_ns: f64 = @floatFromInt(now.since(start));
 
     print("Time elapsed in expensive_function() is: {d:.3}ms", .{
-        elapsed_ns / time.ns_per_s,
+        elapsed_ns / time.ns_per_ms,
     });
 }
diff --git a/src/03-01-elapsed-time.md b/src/03-01-elapsed-time.md
index cf41ac6..9aa591b 100644
--- a/src/03-01-elapsed-time.md
+++ b/src/03-01-elapsed-time.md
@@ -22,7 +22,7 @@ pub fn main() !void {
     const elapsed_ns: f64 = @floatFromInt(now.since(start));
 
     print("Time elapsed in expensive_function() is: {d:.3}ms", .{
-        elapsed_ns / time.ns_per_s,
+        elapsed_ns / time.ns_per_ms,
     });
 }
 ```