diff --git a/src/bin/coreutils/lib/config.h b/src/bin/coreutils/lib/config.h
index bf30788547..f3312817b5 100644
--- a/src/bin/coreutils/lib/config.h
+++ b/src/bin/coreutils/lib/config.h
@@ -1904,7 +1904,9 @@
 /* #undef utime */
 
 /* Define as a macro for copying va_list variables. */
+#if __GNUC__ < 3
 #define va_copy __va_copy
+#endif
 
 /* Define to empty if the keyword `volatile' does not work. Warning: valid
    code using `volatile' can become incorrect without. Disable with care. */
diff --git a/src/bin/m4/lib/config.h b/src/bin/m4/lib/config.h
index 431ef71f98..08b4ce4d1f 100644
--- a/src/bin/m4/lib/config.h
+++ b/src/bin/m4/lib/config.h
@@ -604,4 +604,6 @@
 /* #undef stack_t */
 
 /* Define as a macro for copying va_list variables. */
+#if __GNUC__ < 3
 #define va_copy gl_va_copy
+#endif