diff --git a/core/include/blue/core/btree.h b/core/include/blue/core/btree.h
index cd917de..e456fd0 100644
--- a/core/include/blue/core/btree.h
+++ b/core/include/blue/core/btree.h
@@ -159,7 +159,7 @@ extern "C" {
 						&node->container_node_member);    \
 					break;                                    \
 				}                                                 \
-			} else if (cmp == -1) {                                   \
+			} else if (cmp < 0) {                                     \
 				next = b_btree_left(cur);                         \
                                                                                   \
 				if (!next) {                                      \