diff --git a/shell/ash_test/ash-psubst/falsetick.right b/shell/ash_test/ash-psubst/falsetick.right
new file mode 100644
index 000000000..0335254a8
--- /dev/null
+++ b/shell/ash_test/ash-psubst/falsetick.right
@@ -0,0 +1,24 @@
+0
+0
+0
+0
+2
+2
+2
+2
+./falsetick.tests: line 12: can't create /does/not/exist: nonexistent directory
+1
+./falsetick.tests: line 13: can't create /does/not/exist: nonexistent directory
+1
+./falsetick.tests: line 14: can't create /does/not/exist: nonexistent directory
+1
+./falsetick.tests: line 15: can't create /does/not/exist: nonexistent directory
+1
+./falsetick.tests: line 16: can't create /does/not/exist: nonexistent directory
+1
+./falsetick.tests: line 17: can't create /does/not/exist: nonexistent directory
+1
+./falsetick.tests: line 18: can't create /does/not/exist: nonexistent directory
+1
+./falsetick.tests: line 19: can't create /does/not/exist: nonexistent directory
+1
diff --git a/shell/ash_test/ash-psubst/falsetick.tests b/shell/ash_test/ash-psubst/falsetick.tests
new file mode 100755
index 000000000..d2b93695e
--- /dev/null
+++ b/shell/ash_test/ash-psubst/falsetick.tests
@@ -0,0 +1,19 @@
+# Exitcode 0 (`` has no exitcode, but assignment has):
+true;  a=``; echo $?
+false; a=``; echo $?
+true;  a=$(); echo $?
+false; a=$(); echo $?
+# Exitcode 2 (`cmd` expansion sets exitcode after assignment set it to 0):
+true;  a=`exit 2`; echo $?
+false; a=`exit 2`; echo $?
+true;  a=$(exit 2); echo $?
+false; a=$(exit 2); echo $?
+# Exitcode 1 (redirect sets exitcode to 1 on error after them):
+true;  a=`` >/does/not/exist; echo $?
+false; a=`` >/does/not/exist; echo $?
+true;  a=$() >/does/not/exist; echo $?
+false; a=$() >/does/not/exist; echo $?
+true;  a=`exit 2` >/does/not/exist; echo $?
+false; a=`exit 2` >/does/not/exist; echo $?
+true;  a=$(exit 2) >/does/not/exist; echo $?
+false; a=$(exit 2) >/does/not/exist; echo $?
diff --git a/shell/ash_test/ash-psubst/falsetick2.right b/shell/ash_test/ash-psubst/falsetick2.right
new file mode 100644
index 000000000..670f560f1
--- /dev/null
+++ b/shell/ash_test/ash-psubst/falsetick2.right
@@ -0,0 +1 @@
+Two:2 v:[]
diff --git a/shell/ash_test/ash-psubst/falsetick2.tests b/shell/ash_test/ash-psubst/falsetick2.tests
new file mode 100755
index 000000000..cfbd1a5de
--- /dev/null
+++ b/shell/ash_test/ash-psubst/falsetick2.tests
@@ -0,0 +1,3 @@
+v=v
+v=`exit 2` `false`
+echo Two:$? v:"[$v]"
diff --git a/shell/hush_test/hush-psubst/falsetick.right b/shell/hush_test/hush-psubst/falsetick.right
index 0b98fb778..d2d1a2880 100644
--- a/shell/hush_test/hush-psubst/falsetick.right
+++ b/shell/hush_test/hush-psubst/falsetick.right
@@ -22,6 +22,3 @@ hush: can't open '/does/not/exist': No such file or directory
 1
 hush: can't open '/does/not/exist': No such file or directory
 1
-hush: can't open '/does/not/exist': No such file or directory
-1
-Done: a=b
diff --git a/shell/hush_test/hush-psubst/falsetick.tests b/shell/hush_test/hush-psubst/falsetick.tests
index 44d2eae8b..d2b93695e 100755
--- a/shell/hush_test/hush-psubst/falsetick.tests
+++ b/shell/hush_test/hush-psubst/falsetick.tests
@@ -17,6 +17,3 @@ true;  a=`exit 2` >/does/not/exist; echo $?
 false; a=`exit 2` >/does/not/exist; echo $?
 true;  a=$(exit 2) >/does/not/exist; echo $?
 false; a=$(exit 2) >/does/not/exist; echo $?
-# ...and assignment still happens despite redirect error:
-true;  a=$(echo b) >/does/not/exist; echo $?
-echo "Done: a=$a"
diff --git a/shell/hush_test/hush-psubst/falsetick3.right b/shell/hush_test/hush-psubst/falsetick3.right
new file mode 100644
index 000000000..327849a31
--- /dev/null
+++ b/shell/hush_test/hush-psubst/falsetick3.right
@@ -0,0 +1,3 @@
+hush: can't open '/does/not/exist': No such file or directory
+1
+Done: a=b
diff --git a/shell/hush_test/hush-psubst/falsetick3.tests b/shell/hush_test/hush-psubst/falsetick3.tests
new file mode 100755
index 000000000..cd185335e
--- /dev/null
+++ b/shell/hush_test/hush-psubst/falsetick3.tests
@@ -0,0 +1,3 @@
+# assignment still happens despite redirect error
+true;  a=$(echo b) >/does/not/exist; echo $?
+echo "Done: a=$a"