diff --git a/R/install.R b/R/install.R
index 995c14a9..942bf77c 100644
--- a/R/install.R
+++ b/R/install.R
@@ -855,7 +855,7 @@ rtools4x_version <- function() {
     rtools_ver <- "40"
   } else if (R.version$minor < "3.0") {
     rtools_ver <- "42"
-  } else if (R.version$minor < "5.0") {
+  } else if (R.version$minor < "4.0") {
     rtools_ver <- "43"
   } else {
     rtools_ver <- "44"