diff --git a/src/lib/common/xundump.c b/src/lib/common/xundump.c
index 1cbe177f..7210674c 100644
--- a/src/lib/common/xundump.c
+++ b/src/lib/common/xundump.c
@@ -117,6 +117,8 @@ xuflds(FILE *fp, struct value values[])
 	ungetc(ch, fp);
 
 	switch (ch) {
+	case EOF:
+	    return gripe("Unexpected EOF");
 	case '+': case '-': case '.':
 	case '0': case '1': case '2': case '3': case '4':
 	case '5': case '6': case '7': case '8': case '9':