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-rw-r--r--crypto/ui/ui.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/ui/ui.h b/crypto/ui/ui.h
index 59da88ea02..018296412b 100644
--- a/crypto/ui/ui.h
+++ b/crypto/ui/ui.h
@@ -211,7 +211,7 @@ int UI_process(UI *ui);
/* Give a user interface parametrised control commands. This can be used to
send down an integer, a data pointer or a function pointer, as well as
be used to get information from a UI. */
-int UI_ctrl(UI *ui, int cmd, long i, void *p, void (*f)());
+int UI_ctrl(UI *ui, int cmd, long i, void *p, void (*f)(void));
/* The commands */
/* Use UI_CONTROL_PRINT_ERRORS with the value 1 to have UI_process print the