diff --git a/src/muf.c b/src/muf.c
index 6671651..3032685 100644
--- a/src/muf.c
+++ b/src/muf.c
@@ -196,8 +196,7 @@ int t;
 double xn, xs, ls, h, ff, x, yn_, k, lm, u, a;
 
 
-static double power(man, ex)
-double man, ex;
+static double power(double man, double ex)
 {
     return exp(ex * log(man));
 }
diff --git a/src/qtcwin.c b/src/qtcwin.c
index 7437767..8b6dee0 100644
--- a/src/qtcwin.c
+++ b/src/qtcwin.c
@@ -53,11 +53,11 @@
 
 
 void init_qtc_panel();
-void draw_qtc_panel();
+void draw_qtc_panel(int direction);
 void start_qtc_recording();
 void stop_qtc_recording();
 void clear_help_block();
-void show_help_msg();
+void show_help_msg(int msgidx);
 void showfield(int fidx);
 void modify_field(int pressed);
 void delete_from_field(int dir);