--- modules/mappers/mod_rewrite.c	
+++ modules/mappers/mod_rewrite.c	
@@ -4094,6 +4094,12 @@ 
                     p = &entries[i];
                     s--;
                 }
+                while (   i >= 0
+                       && s < 0) {
+                    i--;
+                    p = &entries[i];
+                    s++;
+                }
             }
         }
         else {