diff --git a/go/types.cc b/go/types.cc
index e7a742f..eb9c766 100644
--- a/go/types.cc
+++ b/go/types.cc
@@ -5182,7 +5182,11 @@
 	    first = false;
 	  else
 	    exp->write_c_string(", ");
-	  exp->write_name(p->name());
+	  // The hash for a function type ignores parameter names, so
+	  // we don't want to write them out here.  If we did write
+	  // them out, we could get spurious changes in export data
+	  // when recompiling a package.
+	  exp->write_name("");
 	  exp->write_c_string(" ");
 	  if (!is_varargs || p + 1 != this->parameters_->end())
 	    exp->write_type(p->type());
@@ -5213,7 +5217,7 @@
 		first = false;
 	      else
 		exp->write_c_string(", ");
-	      exp->write_name(p->name());
+	      exp->write_name("");
 	      exp->write_c_string(" ");
 	      exp->write_type(p->type());
 	    }