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-rw-r--r--tests/enum_sizes/enumsizes.proto2
1 files changed, 2 insertions, 0 deletions
diff --git a/tests/enum_sizes/enumsizes.proto b/tests/enum_sizes/enumsizes.proto
index f9ab0b7f..a85d4160 100644
--- a/tests/enum_sizes/enumsizes.proto
+++ b/tests/enum_sizes/enumsizes.proto
@@ -4,6 +4,8 @@
* a bit of a problem for the encoder/decoder (issue #164).
*/
+syntax = "proto2";
+
import 'nanopb.proto';
option (nanopb_fileopt).long_names = false;