diff --git a/objectivec/GPBUtilities.h b/objectivec/GPBUtilities.h
index ef4f855..828fd16 100644
--- a/objectivec/GPBUtilities.h
+++ b/objectivec/GPBUtilities.h
@@ -34,6 +34,8 @@
 #import "GPBMessage.h"
 #import "GPBRuntimeTypes.h"
 
+@class GPBOneofDescriptor;
+
 CF_EXTERN_C_BEGIN
 
 NS_ASSUME_NONNULL_BEGIN
@@ -92,6 +94,14 @@
  **/
 void GPBClearMessageField(GPBMessage *self, GPBFieldDescriptor *field);
 
+/**
+ * Clears the given onoof field for the given message.
+ *
+ * @param self  The message for which to clear the field.
+ * @param oneof The oneof to clear.
+ **/
+void GPBClearOneof(GPBMessage *self, GPBOneofDescriptor *oneof);
+
 //%PDDM-EXPAND GPB_ACCESSORS()
 // This block of code is generated, do not edit it directly.
 // clang-format off