1 files changed, 1 insertions, 1 deletions

diff --git a/src/base64.c b/src/base64.c
index 066494e..2326168 100644
--- a/src/base64.c
+++ b/src/base64.c
@@ -24,7 +24,7 @@
 static const char base64_str[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
 static const char base64_pad = '=';
 
-static const int8_t base64_table[256] = {
+static const signed char base64_table[256] = {
         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
         -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,