diff --git a/polaris.dme b/polaris.dme
index b72e5fe2eb8..4c2c72dd25c 100644
--- a/polaris.dme
+++ b/polaris.dme
@@ -546,7 +546,7 @@
 #include "code\game\machinery\requests_console.dm"
 #include "code\game\machinery\robot_fabricator.dm"
 #include "code\game\machinery\seed_extractor.dm"
-#include "code\game\machinery\Sleeper.dm"
+#include "code\game\machinery\sleeper.dm"
 #include "code\game\machinery\spaceheater.dm"
 #include "code\game\machinery\status_display.dm"
 #include "code\game\machinery\status_display_ai.dm"