diff --git a/src/butterfly.c b/src/butterfly.c
index 01643521..98894ea7 100644
--- a/src/butterfly.c
+++ b/src/butterfly.c
@@ -537,15 +537,6 @@ static int butterfly_read_byte_eeprom(const PROGRAMMER *pgm, const AVRPART *p, c
   return 0;
 }
 
-static int butterfly_page_erase(const PROGRAMMER *pgm, const AVRPART *p, const AVRMEM *m, unsigned int addr) {
-  if (strcmp(m->desc, "flash") == 0)
-    return -1;            /* not supported */
-  if (strcmp(m->desc, "eeprom") == 0)
-    return 0;             /* nothing to do */
-  pmsg_warning("called on memory type %s\n", m->desc);
-  return -1;
-}
-
 static int butterfly_read_byte(const PROGRAMMER *pgm, const AVRPART *p, const AVRMEM *m,
                             unsigned long addr, unsigned char * value)
 {
@@ -736,7 +727,6 @@ void butterfly_initpgm(PROGRAMMER *pgm) {
    * optional functions
    */
 
-  pgm->page_erase = butterfly_page_erase;
   pgm->paged_write = butterfly_paged_write;
   pgm->paged_load = butterfly_paged_load;