diff --git a/library/DataDefs.cpp b/library/DataDefs.cpp
index 755477d47..cf8a32fcc 100644
--- a/library/DataDefs.cpp
+++ b/library/DataDefs.cpp
@@ -65,7 +65,10 @@ void *type_identity::allocate() {
 
 bool type_identity::copy(void *tgt, const void *src) {
     if (can_allocate() && tgt && src)
+    {
         do_copy(tgt, src);
+        return true;
+    }
     else
         return false;
 }
diff --git a/library/include/RemoteTools.h b/library/include/RemoteTools.h
index ea0937784..bccbb5e62 100644
--- a/library/include/RemoteTools.h
+++ b/library/include/RemoteTools.h
@@ -40,7 +40,7 @@ namespace df
 
 namespace DFHack
 {
-    class MaterialInfo;
+    struct MaterialInfo;
 
     using google::protobuf::RepeatedField;
     using google::protobuf::RepeatedPtrField;