diff --git a/uncore/src/main/scala/scr.scala b/uncore/src/main/scala/scr.scala
index f076364d..29a591af 100644
--- a/uncore/src/main/scala/scr.scala
+++ b/uncore/src/main/scala/scr.scala
@@ -29,9 +29,11 @@ class SCRFileMap(prefix: String, maxAddress: Int, baseAddress: BigInt) {
 
   def as_c_header(): String = {
     addr2name.map{ case(address, name) =>
-      "#define " + prefix + "__" + name + "__PADDR  0x%x".format(baseAddress + address)
-      "#define " + prefix + "__" + name + "__OFFSET 0x%x".format(address)
-    }.mkString("\n") + "\n"
+      List(
+        "#define " + prefix + "__" + name + "__PADDR  0x%x".format(baseAddress + address),
+        "#define " + prefix + "__" + name + "__OFFSET 0x%x".format(address)
+      )
+    }.flatten.mkString("\n") + "\n"
   }
 }