--- a/RegressionTests__VMCrashTests.st	Fri Aug 04 12:09:09 2017 +0100
+++ b/RegressionTests__VMCrashTests.st	Wed Aug 09 10:00:57 2017 +0100
@@ -29,6 +29,19 @@
     "Created: / 08-09-2014 / 12:33:55 / Jan Vrany <jan.vrany@fit.cvut.cz>"
 !
 
+test_issue_171_crash_in_Smalltalk_keys
+    <timeout: 120> "2min"
+    <spawn: true>
+
+    "
+    Commit a68e1e09f73a/stx:libbasic caused following code to crash the VM.
+    "
+
+    Smalltalk keys.
+
+    "Created: / 09-08-2017 / 10:00:17 / Jan Vrany <jan.vrany@fit.cvut.cz>"
+!
+
 test_issue_64_vm_crashes_in_fclose
     "
     Quickly opening and closing files for long enough used to kill the