diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 33d2cc0..c90cee5 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -10,8 +10,7 @@ name: R-CMD-check
 
 env:
   global:
-    - RGL_USE_NULL=TRUE
-    - _R_CHECK_DONTTEST_EXAMPLES_=FALSE
+    _R_CHECK_DONTTEST_EXAMPLES_=FALSE
 
 jobs:
   R-CMD-check: