diff --git a/compiler/cpp/src/main.h b/compiler/cpp/src/main.h
index f8828af..3ab2744 100644
--- a/compiler/cpp/src/main.h
+++ b/compiler/cpp/src/main.h
@@ -50,6 +50,11 @@
 void validate_field_value(t_field* field, t_const_value* cv);
 
 /**
+ * Check members of a throws block
+ */
+bool validate_throws(t_struct* throws);
+
+/**
  * Converts a string filename into a thrift program name
  */
 std::string program_name(std::string filename);