diff --git a/.Rbuildignore b/.Rbuildignore
index 913cbc6..10e810a 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -7,3 +7,5 @@
 =======
 ^misc$
 >>>>>>> b1fce5ac678b1f125c0aa460a8145c4686616376
+README.Rmd
+^.*\\.Rproj$
diff --git a/R/globalVariables.R b/R/globalVariables.R
new file mode 100644
index 0000000..b4ff8bb
--- /dev/null
+++ b/R/globalVariables.R
@@ -0,0 +1 @@
+utils::globalVariables(c("Observed", "Predicted", "Type", "crate", "value"))