diff --git a/include/atmos.h b/include/atmos.h
index d9f6d103b..227c387aa 100644
--- a/include/atmos.h
+++ b/include/atmos.h
@@ -120,6 +120,9 @@
 #define JOY_RIGHT_MASK  0x02
 #define JOY_BTN_1_MASK  0x20
 
+#define JOY_FIRE_MASK   JOY_BTN_1_MASK
+#define JOY_FIRE(v)     ((v) & JOY_FIRE_MASK)
+
 
 
 /* No support for dynamically loadable drivers */
diff --git a/include/telestrat.h b/include/telestrat.h
index 38762be1d..524f7d39f 100644
--- a/include/telestrat.h
+++ b/include/telestrat.h
@@ -105,6 +105,10 @@ extern void telestrat_240_200_2_tgi[];      /* Referred to by tgi_static_stddrv[
 #define JOY_RIGHT_MASK  0x02
 #define JOY_BTN_1_MASK  0x04
 
+#define JOY_FIRE_MASK   JOY_BTN_1_MASK
+#define JOY_FIRE(v)     ((v) & JOY_FIRE_MASK)
+
+
 /* The addresses of the static drivers */
 extern void telestrat_joy[];           /* Referred to by joy_static_stddrv[] */