diff --git a/vpx_ports/asm_offsets.h b/vpx_ports/asm_offsets.h
index d3b4fc706..fc1287e32 100644
--- a/vpx_ports/asm_offsets.h
+++ b/vpx_ports/asm_offsets.h
@@ -23,7 +23,7 @@
 #define BEGIN int main(void) {
 #define END return 0; }
 #else
-#define DEFINE(sym, val) int sym = val;
+#define DEFINE(sym, val) const int sym = val;
 #define BEGIN
 #define END
 #endif