diff --git a/config/linux/pyconfig.h b/config/linux/pyconfig.h
index 145f77b..7c6bfde 100644
--- a/config/linux/pyconfig.h
+++ b/config/linux/pyconfig.h
@@ -37,6 +37,10 @@
 #define SIZEOF_PID_T            __SIZEOF_INT__
 #endif
 
+#ifndef HAVE_IF_NAMEINDEX
+#define HAVE_IF_NAMEINDEX 1
+#endif
+
 #ifndef HAVE_SIGINFO_T_SI_BAND
 #define HAVE_SIGINFO_T_SI_BAND 1
 #endif
diff --git a/config/midipix/pyconfig.h b/config/midipix/pyconfig.h
index 8d49743..5d280a2 100644
--- a/config/midipix/pyconfig.h
+++ b/config/midipix/pyconfig.h
@@ -36,6 +36,10 @@
 #define SIZEOF_PID_T            __SIZEOF_INT__
 #endif
 
+#ifndef HAVE_IF_NAMEINDEX
+#define HAVE_IF_NAMEINDEX 1
+#endif
+
 #ifndef HAVE_SIGINFO_T_SI_BAND
 #define HAVE_SIGINFO_T_SI_BAND 1
 #endif