diff --git a/source/blender/blenlib/intern/BLI_kdopbvh.c b/source/blender/blenlib/intern/BLI_kdopbvh.c
index 0204f9b1430..8c0be971682 100644
--- a/source/blender/blenlib/intern/BLI_kdopbvh.c
+++ b/source/blender/blenlib/intern/BLI_kdopbvh.c
@@ -1128,7 +1128,8 @@ static void traverse(BVHOverlapData *data, BVHNode *node1, BVHNode *node2)
 
 BVHTreeOverlap *BLI_bvhtree_overlap(BVHTree *tree1, BVHTree *tree2, unsigned int *result)
 {
-	unsigned int j, total = 0;
+	int j;
+	unsigned int total = 0;
 	BVHTreeOverlap *overlap = NULL, *to = NULL;
 	BVHOverlapData **data;