1 files changed, 2 insertions, 3 deletions
diff --git a/src/main/java/com/google/devtools/common/options/OptionsParserImpl.java b/src/main/java/com/google/devtools/common/options/OptionsParserImpl.java
index 221dcf030f..38248bf940 100644
--- a/src/main/java/com/google/devtools/common/options/OptionsParserImpl.java
+++ b/src/main/java/com/google/devtools/common/options/OptionsParserImpl.java
@@ -90,10 +90,9 @@ class OptionsParserImpl {
         }
       };
 
-  /**
-   * Create a new parser object
-   */
+  /** Create a new parser object. Do not accept a null OptionsData object. */
   OptionsParserImpl(OptionsData optionsData) {
+    Preconditions.checkNotNull(optionsData);
     this.optionsData = optionsData;
   }