diff --git a/src/main/java/com/google/devtools/build/lib/packages/semantics/BuildLanguageOptions.java b/src/main/java/com/google/devtools/build/lib/packages/semantics/BuildLanguageOptions.java
index 5e94903dc51f39..8b0a2991cbedf8 100644
--- a/src/main/java/com/google/devtools/build/lib/packages/semantics/BuildLanguageOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/packages/semantics/BuildLanguageOptions.java
@@ -405,7 +405,7 @@ public final class BuildLanguageOptions extends OptionsBase {
 
   @Option(
       name = "incompatible_disallow_empty_glob",
-      defaultValue = "false",
+      defaultValue = "true",
       category = "incompatible changes",
       documentationCategory = OptionDocumentationCategory.STARLARK_SEMANTICS,
       effectTags = {OptionEffectTag.BUILD_FILE_SEMANTICS},
@@ -782,7 +782,7 @@ public StarlarkSemantics toStarlarkSemantics() {
       "+incompatible_depset_for_libraries_to_link_getter";
   public static final String INCOMPATIBLE_DISABLE_TARGET_PROVIDER_FIELDS =
       "-incompatible_disable_target_provider_fields";
-  public static final String INCOMPATIBLE_DISALLOW_EMPTY_GLOB = "-incompatible_disallow_empty_glob";
+  public static final String INCOMPATIBLE_DISALLOW_EMPTY_GLOB = "+incompatible_disallow_empty_glob";
   public static final String INCOMPATIBLE_DISALLOW_STRUCT_PROVIDER_SYNTAX =
       "-incompatible_disallow_struct_provider_syntax";
   public static final String INCOMPATIBLE_PACKAGE_GROUP_HAS_PUBLIC_SYNTAX =