diff --git a/lib/test_hexdump.c b/lib/test_hexdump.c
index 3f415d8..1c3c513 100644
--- a/lib/test_hexdump.c
+++ b/lib/test_hexdump.c
@@ -81,7 +81,7 @@
 		const char *q = *result++;
 		size_t amount = strlen(q);
 
-		strncpy(p, q, amount);
+		memcpy(p, q, amount);
 		p += amount;
 
 		*p++ = ' ';