diff --git a/src/cnn/function.c b/src/cnn/function.c
index 9f1e1ce..0143731 100644
--- a/src/cnn/function.c
+++ b/src/cnn/function.c
@@ -5,7 +5,6 @@
 #include "../include/colors.h"
 
 #include "include/function.h"
-#define BOUND_RELU 15
 
 float identity(float x) {
     return x;
@@ -28,7 +27,7 @@ float sigmoid_derivative(float x) {
 
 
 float relu(float x) {
-    return fmaxf(0, fminf(x, BOUND_RELU));
+    return fmaxf(0, fminf(x, RELU_CLIP_VALUE));
 }
 
 float relu_derivative(float x) {
@@ -40,7 +39,7 @@ float relu_derivative(float x) {
 
 float leaky_relu(float x) {
     if (x>0)
-        return fminf(x, BOUND_RELU);
+        return fminf(x, RELU_CLIP_VALUE);
     return x*LEAKER;
 }
 
diff --git a/src/cnn/include/function.h b/src/cnn/include/function.h
index 4e1b770..c09ccab 100644
--- a/src/cnn/include/function.h
+++ b/src/cnn/include/function.h
@@ -12,6 +12,9 @@
 
 #define LEAKER 0.2
 
+// RELU and Leaky RELU max value
+#define RELU_CLIP_VALUE 15
+
 
 typedef float (*ptr)(float);
 typedef ptr (*pm)();