diff --git a/extras/acs/srb2defs.acs b/extras/acs/srb2defs.acs
index 77ec30247b854adab398608a8807febfd4700942..7fe51268608fe110d0291f816236c2f451afa69c 100644
--- a/extras/acs/srb2defs.acs
+++ b/extras/acs/srb2defs.acs
@@ -228,8 +228,8 @@
 
 // 3D floor crumble options
 
-#define CRUMBLE3DFLOOR_NORESPAWN          (1 << 0)
-#define CRUMBLE3DFLOOR_CHECKNORESPAWNFLAG (1 << 1)
+#define CRUMBLE3DFLOOR_NORESPAWN        (1 << 0)
+#define CRUMBLE3DFLOOR_CHECKRESPAWNFLAG (1 << 1)
 
 // 3D floor fade options