diff --git a/genann.c b/genann.c
index bf2f297..a413a8d 100644
--- a/genann.c
+++ b/genann.c
@@ -57,9 +57,9 @@ double lookup[LOOKUP_SIZE];
 
 #define likely(x)       __builtin_expect(!!(x), 1)
 #define unlikely(x)     __builtin_expect(!!(x), 0)
-#define __unused        __attribute__((unused))
+#define unused        __attribute__((unused))
 
-double inline genann_act_sigmoid(const genann *ann __unused, double a) {
+double inline genann_act_sigmoid(const genann *ann unused, double a) {
     if (a < -45.0) return 0;
     if (a > 45.0) return 1;
     return 1.0 / (1 + exp(-a));
@@ -75,7 +75,7 @@ void genann_init_sigmoid_lookup(const genann *ann) {
         }
 }
 
-double inline genann_act_sigmoid_cached(const genann *ann __unused, double a) {
+double inline genann_act_sigmoid_cached(const genann *ann unused, double a) {
     assert(!isnan(a));
 
     if (a < sigmoid_dom_min) return lookup[0];
@@ -89,11 +89,11 @@ double inline genann_act_sigmoid_cached(const genann *ann __unused, double a) {
     return lookup[j];
 }
 
-double inline genann_act_linear(const struct genann *ann __unused, double a) {
+double inline genann_act_linear(const struct genann *ann unused, double a) {
     return a;
 }
 
-double inline genann_act_threshold(const struct genann *ann __unused, double a) {
+double inline genann_act_threshold(const struct genann *ann unused, double a) {
     return a > 0;
 }
 
diff --git a/genann.h b/genann.h
index e8f8fcb..01e36e1 100644
--- a/genann.h
+++ b/genann.h
@@ -24,8 +24,8 @@
  */
 
 
-#ifndef __GENANN_H__
-#define __GENANN_H__
+#ifndef GENANN_H__
+#define GENANN_H__
 
 #include <stdio.h>
 
@@ -105,4 +105,4 @@ double genann_act_linear(const genann *ann, double a);
 }
 #endif
 
-#endif /*__GENANN_H__*/
+#endif /*GENANN_H__*/