diff --git a/auto/src/glew_head.h b/auto/src/glew_head.h
index 26b8808..f1a245f 100644
--- a/auto/src/glew_head.h
+++ b/auto/src/glew_head.h
@@ -121,9 +121,10 @@ typedef _W64 int ptrdiff_t;
 
 #include <stddef.h>
 
-/* SGI MIPSPro doesn't like stdint.h in C++ mode */
+/* SGI MIPSPro doesn't like stdint.h in C++ mode          */
+/* ID: 3376260 Solaris 9 has inttypes.h, but not stdint.h */
 
-#if defined(__sgi) && !defined(__GNUC__)
+#if (defined(__sgi) || defined(__sun)) && !defined(__GNUC__)
 #include <inttypes.h>
 #else
 #include <stdint.h>