diff --git a/zsnes/src/ui.asm b/zsnes/src/ui.asm
index 26c5a085..08bb7902 100644
--- a/zsnes/src/ui.asm
+++ b/zsnes/src/ui.asm
@@ -1309,7 +1309,7 @@ DetermineNew:
     mov bx,ax
     mov edx,fnamest+1
     call Get_File_Date
-%ifndef __LINUX__
+%ifdef __MSDOS__
     shl edx,16
     mov dx,cx
 %endif
diff --git a/zsnes/src/video/procvid.asm b/zsnes/src/video/procvid.asm
index f79731f8..5e81f263 100644
--- a/zsnes/src/video/procvid.asm
+++ b/zsnes/src/video/procvid.asm
@@ -1210,7 +1210,7 @@ DetermineNew:
     mov bx,ax
     mov edx,fnamest+1
     call Get_File_Date
-%ifndef __LINUX__
+%ifdef __MSDOS__
     shl edx,16
     mov dx,cx
 %endif