diff --git a/src/main.c b/src/main.c
index c8d76be..46bb8f2 100644
--- a/src/main.c
+++ b/src/main.c
@@ -6,6 +6,8 @@
 #include "timer.h"
 
 
+#define ENGINE_TICK 25
+
 static int callback_tick(volatile int *tick)
 {
     *tick = 1;
@@ -14,7 +16,7 @@ static int callback_tick(volatile int *tick)
 
 static int get_inputs(void)
 {
-    int opt = GETKEY_DEFAULT & ~GETKEY_REP_ARROWS & ~GETKEY_MOD_SHIFT & ~GETKEY_MOD_ALPHA;
+    int opt = GETKEY_DEFAULT  & ~GETKEY_MOD_SHIFT & ~GETKEY_MOD_ALPHA;
     int timeout = 1;
 
     while(1)
@@ -50,7 +52,7 @@ int main(void)
         int trollface = 0;
         int trollfaced[2] = {5,5};
         static volatile int tick = 1;
-        int t = timer_configure(TIMER_ANY, 25000, GINT_CALL(callback_tick, &tick));
+        int t = timer_configure(TIMER_ANY, ENGINE_TICK*1000, GINT_CALL(callback_tick, &tick));
         if(t >= 0) timer_start(t);
 
         int s_time = 0;
@@ -97,12 +99,14 @@ int main(void)
                 }
                 show_cell(brd->pos[0],brd->pos[1],brd);
                 int rvl[2];
-                int rvl_state = reveal(brd->pos[0],brd->pos[1],brd,rvl);
-                if(rvl_state==1){
-                    trollface = 1;
-                    trollfaced[0] = rvl[0];
-                    trollfaced[1] = rvl[1];
-                    break;
+                if(cell.flagged == 0){
+                    int rvl_state = reveal(brd->pos[0],brd->pos[1],brd,rvl);
+                    if(rvl_state==1){
+                        trollface = 1;
+                        trollfaced[0] = rvl[0];
+                        trollfaced[1] = rvl[1];
+                        break;
+                    }
                 }
             }
             draw_cursor(brd);