diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
index bfa322d..1108ab9 100644
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -28,7 +28,8 @@
 {
     char_u	*sn_name;
 # ifdef UNIX
-    int		sn_dev;
+    int		sn_dev_valid;
+    dev_t	sn_dev;
     ino_t	sn_ino;
 # endif
 # ifdef FEAT_PROFILE
@@ -3049,7 +3050,7 @@
 		    /* Compare dev/ino when possible, it catches symbolic
 		     * links.  Also compare file names, the inode may change
 		     * when the file was edited. */
-		    ((stat_ok && si->sn_dev != -1)
+		    ((stat_ok && si->sn_dev_valid)
 			&& (si->sn_dev == st.st_dev
 			    && si->sn_ino == st.st_ino)) ||
 # endif
@@ -3076,11 +3077,12 @@
 # ifdef UNIX
 	if (stat_ok)
 	{
+	    si->sn_dev_valid = TRUE;
 	    si->sn_dev = st.st_dev;
 	    si->sn_ino = st.st_ino;
 	}
 	else
-	    si->sn_dev = -1;
+	    si->sn_dev_valid = FALSE;
 # endif
 
 	/* Allocate the local script variables to use for this script. */