diff --git a/meta-facebook/meta-yosemite4/recipes-yosemite4/plat-tool/files/yosemite4-common-functions b/meta-facebook/meta-yosemite4/recipes-yosemite4/plat-tool/files/yosemite4-common-functions
index 4e948e6..5c69011 100644
--- a/meta-facebook/meta-yosemite4/recipes-yosemite4/plat-tool/files/yosemite4-common-functions
+++ b/meta-facebook/meta-yosemite4/recipes-yosemite4/plat-tool/files/yosemite4-common-functions
@@ -22,9 +22,7 @@
 
 check_nuvoton_board()
 {
-    check_nuvoton=$(grep nuvoton /sys/firmware/devicetree/base/compatible)
-    if [ "$check_nuvoton" != "" ]; then
-        return 1
-    fi
+    set +e
+    grep nuvoton /sys/firmware/devicetree/base/compatible
     return 0
 }