diff --git a/src/type1z/t1gload.c b/src/type1z/t1gload.c
index cba71dea4..30c0e55af 100644
--- a/src/type1z/t1gload.c
+++ b/src/type1z/t1gload.c
@@ -1035,7 +1035,10 @@
           {
             FT_TRACE4(( " div" ));
             if (top[1])
-              *top++ = top[0] / top[1];
+            {
+              *top = top[0] / top[1];
+              ++top;
+            }
             else
             {
               FT_ERROR(( "T1.Parse_CharStrings : division by 0\n" ));