diff --git a/src/cairo-wideint-type-private.h b/src/cairo-wideint-type-private.h
index a1a2269f8..4ba87d7f9 100644
--- a/src/cairo-wideint-type-private.h
+++ b/src/cairo-wideint-type-private.h
@@ -47,7 +47,11 @@
 # include <inttypes.h>
 #elif HAVE_SYS_INT_TYPES_H
 # include <sys/int_types.h>
-#elif defined(_MSC_VER)
+#else
+#error Cannot find definitions for fixed-width integral types (uint8_t, uint32_t, etc.)
+#endif
+
+#if defined(_MSC_VER)
   typedef __int8 int8_t;
   typedef unsigned __int8 uint8_t;
   typedef __int16 int16_t;
@@ -59,8 +63,6 @@
 # ifndef HAVE_UINT64_T
 #  define HAVE_UINT64_T 1
 # endif
-#else
-#error Cannot find definitions for fixed-width integral types (uint8_t, uint32_t, etc.)
 #endif
 
 #ifndef INT16_MIN