diff --git a/gas/config/ho-sunos.h b/gas/config/ho-sunos.h
index 5d920f6e5b..413d3d109c 100644
--- a/gas/config/ho-sunos.h
+++ b/gas/config/ho-sunos.h
@@ -4,7 +4,11 @@
 #define NO_STDARG
 #endif /* not __STDC__ */
 
+#ifndef __GNUC__
+#ifndef __STDC__
 #include <memory.h>
+#endif
+#endif
 
 #include <ctype.h>
 #include <string.h>