diff --git a/igor-web/src/main/java/com/netflix/spinnaker/igor/ci/CiBuildService.java b/igor-web/src/main/java/com/netflix/spinnaker/igor/ci/CiBuildService.java
index 0afba7307..08902825d 100644
--- a/igor-web/src/main/java/com/netflix/spinnaker/igor/ci/CiBuildService.java
+++ b/igor-web/src/main/java/com/netflix/spinnaker/igor/ci/CiBuildService.java
@@ -18,6 +18,7 @@
 
 import com.netflix.spinnaker.igor.build.model.GenericBuild;
 import java.util.List;
+import java.util.Map;
 
 /**
  * Interface to be implemented by ci build service providers that supports a way of getting builds
@@ -48,8 +49,8 @@ List<GenericBuild> getBuilds(
    * Get the build log by providing the build id. The data returned will be used in the CI view, to
    * present the build's log.
    *
-   * @param buildId
-   * @return a string represent the build log
+   * @param buildId the build id
+   * @return a map with key "log" which represent the build log
    */
-  String getBuildOutput(String buildId);
+  Map<String, Object> getBuildOutput(String buildId);
 }
diff --git a/igor-web/src/main/java/com/netflix/spinnaker/igor/ci/CiController.java b/igor-web/src/main/java/com/netflix/spinnaker/igor/ci/CiController.java
index 72dd75bf1..6ca2ad915 100644
--- a/igor-web/src/main/java/com/netflix/spinnaker/igor/ci/CiController.java
+++ b/igor-web/src/main/java/com/netflix/spinnaker/igor/ci/CiController.java
@@ -18,6 +18,7 @@
 
 import com.netflix.spinnaker.igor.build.model.GenericBuild;
 import java.util.List;
+import java.util.Map;
 import java.util.Optional;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
@@ -50,7 +51,7 @@ public List<GenericBuild> getBuilds(
   }
 
   @GetMapping("/builds/{buildId}/output")
-  public String getBuildOutput(@PathVariable(value = "buildId") String buildId) {
+  public Map<String, Object> getBuildOutput(@PathVariable(value = "buildId") String buildId) {
     return getCiService().getBuildOutput(buildId);
   }