1 files changed, 4 insertions, 2 deletions
diff --git a/generic/Image.c b/generic/Image.c
index ff5174f..a0dbc99 100644
--- a/generic/Image.c
+++ b/generic/Image.c
@@ -1396,8 +1396,10 @@ ZnGetFontEncoding(ZnWInfo	*wi,
       charset++;
     }
     /* Get a lower case string */
-    charset_lc = ZnMalloc(sizeof(charset)+1);
-    for (count = strlen(charset)-1; count >= 0; count--) {
+    count = strlen(charset);
+    charset_lc = ZnMalloc(count+1);
+    charset_lc[count] = '\000';
+    for (count--; count >= 0; count--) {
       charset_lc[count] = tolower(charset[count]);
     }
     charset = charset_lc;