diff --git a/src/powerpc.h b/src/powerpc.h
index fb84daf10a..b109c9dc5a 100644
--- a/src/powerpc.h
+++ b/src/powerpc.h
@@ -14,7 +14,7 @@
 #include "types.h"
 #include "common.h"
 
-#define VA_LIST(x) (x)
+#define VA_LIST(x) (&x)
 
 #ifdef __APPLE__
 #  if __DARWIN_UNIX03 && defined(_STRUCT_PPC_EXCEPTION_STATE)
diff --git a/src/x86.h b/src/x86.h
index dd291091e3..f393ad8727 100644
--- a/src/x86.h
+++ b/src/x86.h
@@ -22,7 +22,7 @@
 #  undef interface
 #endif
 
-#ifdef PLATFORM_WINDOWS
+#if (defined ARCH_x86_32) || (defined PLATFORM_WINDOWS)
 #  define VA_LIST(x) (&x)
 #else
 #  define VA_LIST(x) (x)