diff --git a/library/Console-windows.cpp b/library/Console-windows.cpp
index 7d3272c93..d339e53a0 100644
--- a/library/Console-windows.cpp
+++ b/library/Console-windows.cpp
@@ -285,7 +285,7 @@ namespace DFHack
                 INPUT_RECORD rec;
                 DWORD count;
                 lock->unlock();
-                if (ReadConsoleInputA(console_in, &rec, 1, &count) != 0) {
+                if (ReadConsoleInputA(console_in, &rec, 1, &count) == 0) {
                     lock->lock();
                     return Console::SHUTDOWN;
                 }