2 files changed, 2 insertions, 16 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/BlazeOptionHandler.java b/src/main/java/com/google/devtools/build/lib/runtime/BlazeOptionHandler.java
index ad6f391ccb..4b344abc1c 100644
--- a/src/main/java/com/google/devtools/build/lib/runtime/BlazeOptionHandler.java
+++ b/src/main/java/com/google/devtools/build/lib/runtime/BlazeOptionHandler.java
@@ -437,13 +437,8 @@ public final class BlazeOptionHandler {
     }
 
     if (!foundDefinition) {
-      String warning = "Config value " + configToExpand + " is not defined in any .rc file";
-      CommonCommandOptions commonOptions = optionsParser.getOptions(CommonCommandOptions.class);
-      if (commonOptions.allowUndefinedConfigs) {
-        eventHandler.handle(Event.warn(warning));
-      } else {
-        throw new OptionsParsingException(warning);
-      }
+      throw new OptionsParsingException(
+          "Config value " + configToExpand + " is not defined in any .rc file");
     }
     return expansion;
   }
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/CommonCommandOptions.java b/src/main/java/com/google/devtools/build/lib/runtime/CommonCommandOptions.java
index 923ebe6693..2a88c32e98 100644
--- a/src/main/java/com/google/devtools/build/lib/runtime/CommonCommandOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/runtime/CommonCommandOptions.java
@@ -105,15 +105,6 @@ public class CommonCommandOptions extends OptionsBase {
   )
   public boolean alwaysProfileSlowOperations;
 
-  @Option(
-    name = "allow_undefined_configs",
-    defaultValue = "false",
-    documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
-    effectTags = {OptionEffectTag.EAGERNESS_TO_EXIT},
-    help = "Do not throw an error when the config is not defined."
-  )
-  public boolean allowUndefinedConfigs;
-
   /** Converter for UUID. Accepts values as specified by {@link UUID#fromString(String)}. */
   public static class UUIDConverter implements Converter<UUID> {