diff --git a/src/tools.c b/src/tools.c
index 718bb49..8010126 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -4510,9 +4510,9 @@
 int dump_text(struct buffer *out, const char *buf, int bsize)
 {
 	unsigned char c;
-	int ptr = 0;
+	size_t ptr = 0;
 
-	while (buf[ptr] && ptr < bsize) {
+	while (ptr < bsize && buf[ptr]) {
 		c = buf[ptr];
 		if (isprint((unsigned char)c) && isascii((unsigned char)c) && c != '\\' && c != ' ' && c != '=') {
 			if (out->data > out->size - 1)