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-rw-r--r--g10/main.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/g10/main.h b/g10/main.h
index d6b5a967e..be60d17ce 100644
--- a/g10/main.h
+++ b/g10/main.h
@@ -93,7 +93,7 @@ int openpgp_md_test_algo( int algo );
#ifdef USE_IDEA
void idea_cipher_warn( int show );
#else
-#define idea_cipher_warn(a)
+#define idea_cipher_warn(a) do { } while (0)
#endif
struct expando_args