diff --git a/sml/src/sml_number.c b/sml/src/sml_number.c
index 84c5a34..89c0068 100644
--- a/sml/src/sml_number.c
+++ b/sml/src/sml_number.c
@@ -22,7 +22,7 @@
 #include <stdio.h>
 
 u64 sml_number_parse(sml_buffer *buf, unsigned char type, int max_size) {
-	int l, i, j;
+	int l, i;
 	unsigned char b;
 	u64 n = 0;
 	if (sml_buf_get_next_type(buf) != type) {