diff --git a/source/texk/upmendex/pageread.c b/source/texk/upmendex/pageread.c
index b77fb2931..ac72af48b 100644
--- a/source/texk/upmendex/pageread.c
+++ b/source/texk/upmendex/pageread.c
@@ -39,7 +39,7 @@ int lastpage(const char *filename)
 		fp=NULL;
 	if (fp==NULL) {
 		fprintf(stderr,"No log file, %s.\n",logfile);
-		exit(0);
+		exit(255);
 	}
 
 	while (1) {
diff --git a/source/texk/upmendex/styfile.c b/source/texk/upmendex/styfile.c
index b6e35ea33..c0d583c2b 100644
--- a/source/texk/upmendex/styfile.c
+++ b/source/texk/upmendex/styfile.c
@@ -47,7 +47,7 @@ void styread(const char *filename)
 		fp=NULL;
 	if (fp==NULL) {
 		fprintf(stderr,"%s does not exist.\n",filename);
-		exit(0);
+		exit(255);
 	}
 	verb_printf(efp,"Scanning style file %s.",filename);