diff --git a/src/hooks/module/useTrestle.js b/src/hooks/module/useTrestle.js
index 9e4415bd..658c8c22 100644
--- a/src/hooks/module/useTrestle.js
+++ b/src/hooks/module/useTrestle.js
@@ -830,7 +830,7 @@ export const useTrestle = () => {
       return -surfaceCompass
     }
 
-    let resultAzimuth = moduleCompass
+    let resultAzimuth = parseInt(moduleCompass, 10)
 
     switch (direction) {
       case 'south': {