1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/src/activation.h b/src/lib/src/activation.h
index b56a69e..4c8a9e4 100644
--- a/src/lib/src/activation.h
+++ b/src/lib/src/activation.h
@@ -9,8 +9,8 @@ static inline R sigmoid(R x) { return 1. / (1. + exp(-x)); }
 static inline R relu(R x) { return fmax(0, x); }
 
 #define NN_MAP_ARRAY(f, in, out, size) \
-  for (int i = 0; i < size; ++i) {     \
-    out[i] = f(in[i]);                 \
+  for (int ii = 0; ii < size; ++ii) {  \
+    out[ii] = f(in[ii]);               \
   }
 
 #define sigmoid_array(in, out, size) NN_MAP_ARRAY(sigmoid, in, out, size)