diff --git a/io.h b/io.h
index dc853eb..ce35b49 100644
--- a/io.h
+++ b/io.h
@@ -13,7 +13,7 @@
 # else
 #   define IO_PLATFORM_WINDOWS 0
 #   define IO_PLATFORM_LINUX   0
-#   define IO_PLATFORM_OTHER   0
+#   define IO_PLATFORM_OTHER   1
 # endif
 
 #include <stdint.h>
diff --git a/io2.h b/io2.h
index 8c9b7aa..9c153a5 100644
--- a/io2.h
+++ b/io2.h
@@ -13,7 +13,7 @@
 #else
 #   define IO_PLATFORM_WINDOWS 0
 #   define IO_PLATFORM_LINUX   0
-#   define IO_PLATFORM_OTHER   0
+#   define IO_PLATFORM_OTHER   1
 #endif
 
 #if IO_PLATFORM_WINDOWS