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-rw-r--r--keyserver/curl-shim.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/keyserver/curl-shim.c b/keyserver/curl-shim.c
index 4a4d18f56..8c7c36539 100644
--- a/keyserver/curl-shim.c
+++ b/keyserver/curl-shim.c
@@ -306,7 +306,7 @@ curl_escape(char *str,int length)
else
{
char numbuf[5];
- sprintf(numbuf,"%%%02X",str[idx]);
+ sprintf(numbuf,"%%%02X",(unsigned char)str[idx]);
strcpy(&enc[enc_idx],numbuf);
enc_idx+=3;
}