diff --git a/check.sh b/check.sh
index 00e0850..50b78a2 100755
--- a/check.sh
+++ b/check.sh
@@ -70,6 +70,7 @@ tests='
 20-pipe-exit-0
 20-pipe-exit-1
 20-pipe-sed
+20-exec
 
 30-substitution
 30-substitution-backtick
diff --git a/test/20-exec.sh b/test/20-exec.sh
new file mode 100644
index 0000000..8bd0061
--- /dev/null
+++ b/test/20-exec.sh
@@ -0,0 +1,2 @@
+exec true
+false