diff --git a/code/__defines/math.dm b/code/__defines/math.dm
index a93291afa1..d59180bbfa 100644
--- a/code/__defines/math.dm
+++ b/code/__defines/math.dm
@@ -9,8 +9,6 @@
 
 #define SHORT_REAL_LIMIT 16777216
 
-#define CLAMP01(x) clamp(x, 0, 1)
-
 #define TAN(x) tan(x)
 
 #define ATAN2(x, y) arctan(x, y)
diff --git a/code/modules/lighting/lighting_source.dm b/code/modules/lighting/lighting_source.dm
index 451b8273c8..a25de730a3 100644
--- a/code/modules/lighting/lighting_source.dm
+++ b/code/modules/lighting/lighting_source.dm
@@ -189,7 +189,7 @@
 	);
 
 // This is the define used to calculate falloff.
-#define LUM_FALLOFF(C, T)(1 - CLAMP01(((C.x - T.x) ** 2 +(C.y - T.y) ** 2 + LIGHTING_HEIGHT) ** 0.6 / max(1, light_range)))
+#define LUM_FALLOFF(C, T)(1 - clamp(((C.x - T.x) ** 2 +(C.y - T.y) ** 2 + LIGHTING_HEIGHT) ** 0.6 / max(1, light_range), 0, 1))
 
 /datum/light_source/proc/apply_lum()
 	var/static/update_gen = 1
diff --git a/code/modules/lighting/lighting_turf.dm b/code/modules/lighting/lighting_turf.dm
index bc3c099091..dcd8b902af 100644
--- a/code/modules/lighting/lighting_turf.dm
+++ b/code/modules/lighting/lighting_turf.dm
@@ -54,7 +54,7 @@
 
 	totallums =(totallums - minlum) /(maxlum - minlum)
 
-	return CLAMP01(totallums)
+	return clamp(totallums, 0, 1)
 
 // Can't think of a good name, this proc will recalculate the has_opaque_atom variable.
 /turf/proc/recalc_atom_opacity()