diff --git a/src/loader.c b/src/loader.c
index f35bdc1..03c6cf9 100644
--- a/src/loader.c
+++ b/src/loader.c
@@ -488,6 +488,8 @@ static void ldr_load_pw_line(struct db_main *db, char *line)
 			int collisions = 0;
 			if ((current_pw = db->password_hash[pw_hash]))
 			do {
+				if (!current_pw->source)
+					continue;
 				if (!memcmp(current_pw->binary, binary,
 				    format->params.binary_size) &&
 				    !strcmp(current_pw->source, piece)) {