diff --git a/core/src/main/scala/org/bdgenomics/cannoli/Vep.scala b/core/src/main/scala/org/bdgenomics/cannoli/Vep.scala
index df1ee70..87c2597 100644
--- a/core/src/main/scala/org/bdgenomics/cannoli/Vep.scala
+++ b/core/src/main/scala/org/bdgenomics/cannoli/Vep.scala
@@ -83,12 +83,11 @@ class Vep(
       .setExecutable(args.executable)
       .add("--format")
       .add("vcf")
+      .add("--vcf")
       .add("--output_file")
       .add("STDOUT")
-      .add("--vcf_info_field")
-      .add("ANN")
       .add("--terms")
-      .add("so")
+      .add("SO")
       .add("--no_stats")
       .add("--offline")
       .add("--dir_cache")