diff --git a/configure/os/CONFIG.Common.linux-athlon b/configure/os/CONFIG.Common.linux-athlon
index 46a4ca953..af018d11e 100644
--- a/configure/os/CONFIG.Common.linux-athlon
+++ b/configure/os/CONFIG.Common.linux-athlon
@@ -12,9 +12,11 @@ include $(CONFIG)/os/CONFIG.Common.linux-x86
 
 ARCH_DEP_CFLAGS += -march=athlon-mp -mfpmath=sse
 
-
 ifeq ($(BUILD_CLASS),CROSS)
    VALID_BUILDS = Ioc
-   GNU_TARGET=athlon-pc-linux-gnu
 endif
 
+# If your crosscompiler name has a GNU target prefix like <gnutarget>-gcc,
+# e.g. athlon-pc-linux-gnu-gcc, put a GNU_TARGET definition in
+# CONFIG_SITE.<host>.linux-athlon file, e.g. GNU_TARGET=athlon-pc-linux-gnu
+