diff --git a/test.sh b/test.sh
index 8fe1739..ee31bc7 100755
--- a/test.sh
+++ b/test.sh
@@ -1078,4 +1078,22 @@ expecting <<EOF
 bon@jour
 EOF
 
+when_run <<"EOF" "variable substitution in export variable name"
+export VAR=answer
+export the_$VAR=42
+echo the answer is $the_answer
+EOF
+expecting <<EOF
+the answer is 42
+EOF
+
+when_run <<"EOF" "variable substitution in export variable name"
+export VAR=answer
+export $VAR=42
+echo the answer is $answer
+EOF
+expecting <<EOF
+the answer is 42
+EOF
+
 finalize