diff --git a/Recast/Source/RecastMeshDetail.cpp b/Recast/Source/RecastMeshDetail.cpp
index e293819..f953132 100644
--- a/Recast/Source/RecastMeshDetail.cpp
+++ b/Recast/Source/RecastMeshDetail.cpp
@@ -647,11 +647,10 @@ static bool buildPolyDetail(rcContext* ctx, const float* in, const int nin,
 	int hull[MAX_VERTS];
 	int nhull = 0;
 	
-	nverts = 0;
+	nverts = nin;
 	
 	for (int i = 0; i < nin; ++i)
 		rcVcopy(&verts[i*3], &in[i*3]);
-	nverts = nin;
 	
 	edges.resize(0);
 	tris.resize(0);