diff --git a/cwms-data-api/src/main/java/cwms/cda/api/BlobController.java b/cwms-data-api/src/main/java/cwms/cda/api/BlobController.java
index 65e3aaa0f..0c796b127 100644
--- a/cwms-data-api/src/main/java/cwms/cda/api/BlobController.java
+++ b/cwms-data-api/src/main/java/cwms/cda/api/BlobController.java
@@ -161,7 +161,7 @@ Integer.class, DEFAULT_PAGE_SIZE, getMetrics(),
                     @OpenApiResponse(status = STATUS_200,
                             description = "Returns requested blob.",
                             content = {
-                                    @OpenApiContent(type = "application/octet-stream")
+                                    @OpenApiContent(type = "application/octet-stream", from = byte[].class)
                             })
             },
             tags = {TAG}