diff --git a/nb-api/src/test/java/io/nosqlbench/nb/api/NBEnvironmentTest.java b/nb-api/src/test/java/io/nosqlbench/nb/api/NBEnvironmentTest.java
index 9081ed452..9f316ad61 100644
--- a/nb-api/src/test/java/io/nosqlbench/nb/api/NBEnvironmentTest.java
+++ b/nb-api/src/test/java/io/nosqlbench/nb/api/NBEnvironmentTest.java
@@ -22,8 +22,8 @@ public class NBEnvironmentTest {
     public void testInterpolationWithTimestamp() {
         NBEnvironment env = new NBEnvironment();
         long millis = 1633964892320L;
-        String time1 = env.interpolateWithTimestamp("word WOO %td %% end", millis, Map.of("WOO","WOW")).orElse(null);
-        assertThat(time1).isEqualTo("word WOW 11 % end");
+        String time1 = env.interpolateWithTimestamp("word WOO$WOO %td %% end", millis, Map.of("WOO","WOW")).orElse(null);
+        assertThat(time1).isEqualTo("word WOOWOW 11 % end");
     }
 
     @Test