diff --git a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/rtkcluster/RtkClusterService.java b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/rtkcluster/RtkClusterService.java
index 4f3492d8..b01885b9 100644
--- a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/rtkcluster/RtkClusterService.java
+++ b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/rtkcluster/RtkClusterService.java
@@ -120,7 +120,7 @@ public class RtkClusterService implements ApplicationRunner {
         }
         worker.submit(() -> {
             try {
-                ProcessBuilder builder = new ProcessBuilder("rtkrcv", "-nc", "-o", confPath);
+                ProcessBuilder builder = new ProcessBuilder("/opt/rtk/bin/rtkrcv", "-nc", "-o", confPath);
                 builder.directory(new File(workDir));
                 builder.redirectErrorStream(true);
                 LOGGER.info("Starting rtkrcv for {} with {}", deviceId, confPath);