1 files changed, 5 insertions, 4 deletions

diff --git a/html.c b/html.c
index 337baeb..eaabf72 100644
--- a/html.c
+++ b/html.c
@@ -268,19 +268,20 @@ int hextoint(char c)
 
 char *convert_query_hexchar(char *txt)
 {
-        int d1, d2;
-        if (strlen(txt) < 3) {
+        int d1, d2, n;
+        n = strlen(txt);
+        if (n < 3) {
                 *txt = '\0';
                 return txt-1;
         }
         d1 = hextoint(*(txt+1));
         d2 = hextoint(*(txt+2));
         if (d1<0 || d2<0) {
-                strcpy(txt, txt+3);
+                memmove(txt, txt+3, n-3);
                 return txt-1;
         } else {
                 *txt = d1 * 16 + d2;
-                strcpy(txt+1, txt+3);
+                memmove(txt+1, txt+3, n-2);
                 return txt;
         }
 }