diff --git a/spice_codegen.py b/spice_codegen.py
index c6d6aa9..a9fdee9 100755
--- a/spice_codegen.py
+++ b/spice_codegen.py
@@ -144,9 +144,10 @@ writer.public_prefix = options.prefix
 
 writer.writeln("/* this is a file autogenerated by spice_codegen.py */")
 writer.header.writeln("/* this is a file autogenerated by spice_codegen.py */")
-writer.writeln("#ifdef HAVE_CONFIG_H")
-writer.writeln("#include <config.h>")
-writer.writeln("#endif")
+if not options.header and not options.generate_enums:
+    writer.writeln("#ifdef HAVE_CONFIG_H")
+    writer.writeln("#include <config.h>")
+    writer.writeln("#endif")
 
 if options.assert_on_error:
     writer.set_option("assert_on_error")