diff --git a/buildSrc/src/main/java/org/elasticsearch/gradle/ReaperService.java b/buildSrc/src/main/java/org/elasticsearch/gradle/ReaperService.java
index 5970c4018a4..c4c171ac486 100644
--- a/buildSrc/src/main/java/org/elasticsearch/gradle/ReaperService.java
+++ b/buildSrc/src/main/java/org/elasticsearch/gradle/ReaperService.java
@@ -61,7 +61,7 @@ public class ReaperService {
      */
     public void registerPid(String serviceId, long pid) {
         String[] killPidCommand = OS.<String[]>conditional()
-            .onWindows(() -> new String[] { "Taskill", "/F", "/PID", String.valueOf(pid) })
+            .onWindows(() -> new String[] { "Taskkill", "/F", "/PID", String.valueOf(pid) })
             .onUnix(() -> new String[] { "kill", "-9", String.valueOf(pid) })
             .supply();
         registerCommand(serviceId, killPidCommand);