diff --git a/src/eval.c b/src/eval.c
index dd16851..4ba4121 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -22929,7 +22929,7 @@
 		    f = -f;
 		    sign = '-';
 		}
-		if ((fprintf(fd, "let %s = %c&%f",
+		if ((fprintf(fd, "let %s = %c%f",
 					       this_var->di_key, sign, f) < 0)
 			|| put_eol(fd) == FAIL)
 		    return FAIL;