diff --git a/panorama-viewer.js b/panorama-viewer.js
index 2c676a9..4212940 100644
--- a/panorama-viewer.js
+++ b/panorama-viewer.js
@@ -20,7 +20,7 @@
 		for (let p = 0; p < parallels; p++) {
 			const y = -radius + p * 2 * radius / parallels;
 			for (let m = 0; m < meridians; m++) {
-				const θ = 2 * Math.PI / meridians;
+				const θ = m * 2 * Math.PI / meridians;
 				const x = Math.sin(θ) * radius;
 				const z = Math.cos(θ) * radius;