1 files changed, 1 insertions, 1 deletions
diff --git a/src/feh.h b/src/feh.h
index 1d5e918..15da763 100644
--- a/src/feh.h
+++ b/src/feh.h
@@ -152,7 +152,7 @@ void feh_event_handle_stdin();
 void feh_event_handle_generic(winwidget winwid, unsigned int state, KeySym keysym, unsigned int button);
 fehkey *feh_str_to_kb(char * action);
 void feh_action_run(feh_file * file, char *action, winwidget winwid);
-char *format_size(int size);
+char *format_size(double size);
 char *feh_printf(char *str, feh_file * file, winwidget winwid);
 void im_weprintf(winwidget w, char *fmt, ...);
 void feh_draw_zoom(winwidget w);