diff --git a/photon-lib/src/main/java/org/photonvision/estimation/VisionEstimation.java b/photon-lib/src/main/java/org/photonvision/estimation/VisionEstimation.java
index f5fdb2953d..3c9c2c152c 100644
--- a/photon-lib/src/main/java/org/photonvision/estimation/VisionEstimation.java
+++ b/photon-lib/src/main/java/org/photonvision/estimation/VisionEstimation.java
@@ -103,7 +103,7 @@ public static PNPResults estimateCamPosePNP(
         Point[] points = OpenCVHelp.cornersToPoints(corners);
 
         // single-tag pnp
-        if (visTags.size() == 1) {
+        if (knownTags.size() == 1) {
             var camToTag =
                     OpenCVHelp.solvePNP_SQUARE(
                             cameraMatrix, distCoeffs, TargetModel.kTag16h5.vertices, points);