diff --git a/Filelist b/Filelist
index 8e80e44..d41af0a 100644
--- a/Filelist
+++ b/Filelist
@@ -373,7 +373,7 @@
 		src/os_mac.h \
 		src/os_mac.rsr.hqx \
 		src/os_mac_conv.c \
-		src/os_macosx.c \
+		src/os_macosx.m \
 		src/proto/gui_mac.pro \
 		src/proto/os_mac_conv.pro \