diff --git a/lib/pure/terminal.nim b/lib/pure/terminal.nim
index 62cee0ee87..c135f6a00e 100644
--- a/lib/pure/terminal.nim
+++ b/lib/pure/terminal.nim
@@ -502,8 +502,8 @@ proc getch*(): char =
     var numRead: cint 
     while true:
       # Block until character is entered
-      assert(waitForSingleObject(fd, INFINITE) == WAIT_OBJECT_0)
-      assert(readConsoleInput(fd, addr(keyEvent), 1, addr(numRead)) != 0)
+      doAssert(waitForSingleObject(fd, INFINITE) == WAIT_OBJECT_0)
+      doAssert(readConsoleInput(fd, addr(keyEvent), 1, addr(numRead)) != 0)
       if numRead == 0 or keyEvent.eventType != 1 or keyEvent.bKeyDown == 0:
         continue
       return char(keyEvent.uChar)