diff --git a/code/__defines/math.dm b/code/__defines/math.dm
index d59180bbfa..2f8aae7b4e 100644
--- a/code/__defines/math.dm
+++ b/code/__defines/math.dm
@@ -9,8 +9,6 @@
 
 #define SHORT_REAL_LIMIT 16777216
 
-#define TAN(x) tan(x)
-
 #define ATAN2(x, y) arctan(x, y)
 
 
@@ -41,7 +39,7 @@
 #define MODULUS(x, y) ( (x) - (y) * round((x) / (y)) )
 
 // Cotangent
-#define COT(x) (1 / TAN(x))
+#define COT(x) (1 / tan(x))
 
 // Secant
 #define SEC(x) (1 / cos(x))
diff --git a/code/modules/integrated_electronics/subtypes/trig.dm b/code/modules/integrated_electronics/subtypes/trig.dm
index 303053639f..e6ed841e11 100644
--- a/code/modules/integrated_electronics/subtypes/trig.dm
+++ b/code/modules/integrated_electronics/subtypes/trig.dm
@@ -71,7 +71,7 @@
 	var/result = null
 	var/A = get_pin_data(IC_INPUT, 1)
 	if(!isnull(A))
-		result = TAN(A)
+		result = tan(A)
 
 	set_pin_data(IC_OUTPUT, 1, result)
 	push_data()