diff --git a/recipes-kernel/linux/setup-defconfig.inc b/recipes-kernel/linux/setup-defconfig.inc
index 74689290..2c169cd2 100644
--- a/recipes-kernel/linux/setup-defconfig.inc
+++ b/recipes-kernel/linux/setup-defconfig.inc
@@ -37,7 +37,7 @@ do_configure() {
                 exit 1
             else
                 # Sanitize config fragment files to be relative to sources
-                configfrags+=" ${S}/$f"
+                configfrags="$configfrags ${S}/$f"
             fi
         done
     fi