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-rw-r--r--src/file_spf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/file_spf.c b/src/file_spf.c
index 2fdf07f..9da9b6e 100644
--- a/src/file_spf.c
+++ b/src/file_spf.c
@@ -46,7 +46,7 @@ const file_hint_t file_hint_spf= {
.register_header_check=&register_header_check_spf
};
-const unsigned char spf_header[12]= {
+static const unsigned char spf_header[12]= {
'S', 'P', 'F', 'I', 0x00, 0x02, 0x00, 0x00, 0x41, 0x00, 0x00, 0x00
};