diff --git a/src/client/mac/handler/exception_handler.cc b/src/client/mac/handler/exception_handler.cc
index 8c4a0d50..4a5d4596 100644
--- a/src/client/mac/handler/exception_handler.cc
+++ b/src/client/mac/handler/exception_handler.cc
@@ -92,12 +92,15 @@ extern "C"
   boolean_t exc_server(mach_msg_header_t *request,
                        mach_msg_header_t *reply);
 
+  // This symbol must be visible to dlsym() - see
+  // http://code.google.com/p/google-breakpad/issues/detail?id=345 for details.
   kern_return_t catch_exception_raise(mach_port_t target_port,
                                       mach_port_t failed_thread,
                                       mach_port_t task,
                                       exception_type_t exception,
                                       exception_data_t code,
-                                      mach_msg_type_number_t code_count);
+                                      mach_msg_type_number_t code_count)
+      __attribute__((visibility("default")));
 
   kern_return_t ForwardException(mach_port_t task,
                                  mach_port_t failed_thread,