diff --git a/client/util.c b/client/util.c
index 22490f62a..5d7ce0370 100644
--- a/client/util.c
+++ b/client/util.c
@@ -313,11 +313,11 @@ char *sprint_hex_ascii(const uint8_t *data, const size_t len) {
 	memset(buf, 0x00, UTIL_BUFFER_SIZE_SPRINT);
 	size_t max_len = (len > 1010) ? 1010 : len;
 
-	sprintf(tmp, "%s| ", sprint_hex(data, max_len) );
+	snprintf(tmp, UTIL_BUFFER_SIZE_SPRINT, "%s| ", sprint_hex(data, max_len) );
 	
 	size_t i = 0;
-	size_t pos = (max_len * 3)+2;
-	while(i < max_len){
+	size_t pos = (max_len * 3) + 2;
+	while (i < max_len){
 		char c = data[i];
 		if ( (c < 32) || (c == 127))
 			c = '.';