diff --git a/zdefs.acs b/zdefs.acs
index 4cef9bf..946088b 100644
--- a/zdefs.acs
+++ b/zdefs.acs
@@ -295,6 +295,16 @@
 #define APROP_MaxDropOffHeight 45
 #define APROP_DamageType	46
 
+// New to Eternity
+#define APROP_Counter0      100
+#define APROP_Counter1      101
+#define APROP_Counter2      102
+#define APROP_Counter3      103
+#define APROP_Counter4      104
+#define APROP_Counter5      105
+#define APROP_Counter6      106
+#define APROP_Counter7      107
+
 // Render Styles ------------------------------------------------------------
 
 #define STYLE_None			0	// Do not draw