diff --git a/src/fileio.c b/src/fileio.c
index 708ef0f3..96f5f9c2 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -1547,6 +1547,17 @@ int fileio_fmt_autodetect(const char *fname) {
 
 
 
+int fileio_mem(int op, const char *filename, FILEFMT format,
+  const AVRPART *p, const AVRMEM *mem, int size) {
+
+  if(size < 0 || op == FIO_READ || op == FIO_READ_FOR_VERIFY)
+    size = mem->size;
+
+  const Segment seg = {0, size};
+  return fileio_segments(op, filename, format, p, mem, 1, &seg);
+}
+
+
 int fileio(int op, const char *filename, FILEFMT format,
   const AVRPART *p, const char *memstr, int size) {
 
@@ -1556,11 +1567,7 @@ int fileio(int op, const char *filename, FILEFMT format,
     return -1;
   }
 
-  if(size < 0 || op == FIO_READ || op == FIO_READ_FOR_VERIFY)
-    size = mem->size;
-
-  const Segment seg = {0, size};
-  return fileio_segments(op, filename, format, p, mem, 1, &seg);
+  return fileio_mem(op, filename, format, p, mem, size);
 }
 
 
diff --git a/src/libavrdude.h b/src/libavrdude.h
index 1ecd3db7..728a3452 100644
--- a/src/libavrdude.h
+++ b/src/libavrdude.h
@@ -479,7 +479,7 @@ typedef struct {
 
 #define mem_is_in_flash(mem) (!!((mem)->type & MEM_IN_FLASH))
 #define mem_is_a_fuse(mem) (!!((mem)->type & MEM_IS_A_FUSE))
-#define mem_is_in_fuses(mem) (!!((mem)->type & (MEM_FUSES | MEM_IS_A_FUSE))) // If fuses exists, that is
+#define mem_is_in_fuses(mem) (!!((mem)->type & (MEM_FUSES | MEM_IS_A_FUSE))) // If fuses exists!
 #define mem_is_user_type(mem) (!!((mem)->type & MEM_USER_TYPE))
 #define mem_is_in_sigrow(mem) (!!((mem)->type & MEM_IN_SIGROW)) // If sigrow exists, that is
 #define mem_is_readonly(mem) (!!((mem)->type & MEM_READONLY))
@@ -1243,6 +1243,9 @@ int fileio_fmt_autodetect_fp(FILE *f);
 
 int fileio_fmt_autodetect(const char *fname);
 
+int fileio_mem(int oprwv, const char *filename, FILEFMT format,
+  const AVRPART *p, const AVRMEM *mem, int size);
+
 int fileio(int oprwv, const char *filename, FILEFMT format,
   const AVRPART *p, const char *memstr, int size);