diff --git a/config b/config
index 886665ba0e..be307e908e 100755
--- a/config
+++ b/config
@@ -547,9 +547,9 @@ case "$GUESSOS" in
 	esac
 	if [ "$CC" = "gcc" ]; then
 	    case ${ISA:-generic} in
-	    EV5|EV45)		options="$options -march=ev5";;
-	    EV56|PCA56)		options="$options -march=ev56";;
-	    EV6|EV67|PCA57)	options="$options -march=ev6";;
+	    EV5|EV45)		options="$options -mcpu=ev5";;
+	    EV56|PCA56)		options="$options -mcpu=ev56";;
+	    EV6|EV67|PCA57)	options="$options -mcpu=ev6";;
 	    esac
 	fi
 	;;