diff --git a/src/engine/renderlights.cpp b/src/engine/renderlights.cpp
index 268bf86..b680979 100644
--- a/src/engine/renderlights.cpp
+++ b/src/engine/renderlights.cpp
@@ -1617,7 +1617,7 @@ FVAR(smprec, 1e-3f, 1, 1e3f);
 FVAR(smcubeprec, 1e-3f, 1, 1e3f);
 FVAR(smspotprec, 1e-3f, 1, 1e3f);
 
-VARF(smsize, 10, 12, 16, cleanupshadowatlas());
+VARFP(smsize, 10, 12, 16, cleanupshadowatlas());
 VAR(smsidecull, 0, 1, 1);
 VAR(smviscull, 0, 1, 1);
 VAR(smborder, 0, 3, 16);