diff --git a/src/logic/DebugProfile.swift b/src/logic/DebugProfile.swift
index 4d239694..eae6fc49 100644
--- a/src/logic/DebugProfile.swift
+++ b/src/logic/DebugProfile.swift
@@ -106,11 +106,14 @@ class DebugProfile {
     }
 
     static func inputSource() -> String {
-        if let inputSource = TISCopyCurrentKeyboardInputSource()?.takeUnretainedValue(),
-            let localizedNamePointer = TISGetInputSourceProperty(inputSource, kTISPropertyLocalizedName) {
-            let localizedName = Unmanaged<AnyObject>.fromOpaque(localizedNamePointer).takeUnretainedValue()
-            return localizedName as? String ?? ""
+        let r = DispatchQueue.main.sync {
+            if let inputSource = TISCopyCurrentKeyboardInputSource()?.takeUnretainedValue(),
+                let localizedNamePointer = TISGetInputSourceProperty(inputSource, kTISPropertyLocalizedName) {
+                let localizedName = Unmanaged<AnyObject>.fromOpaque(localizedNamePointer).takeUnretainedValue()
+                return localizedName as? String ?? ""
+            }
+            return ""
         }
-        return ""
+        return r
     }
 }