diff --git a/client/cmdlfcotag.c b/client/cmdlfcotag.c
index eef243394..5709ae92f 100644
--- a/client/cmdlfcotag.c
+++ b/client/cmdlfcotag.c
@@ -127,5 +127,5 @@ int demodCOTAG(void) {
 }
 
 int readCOTAGUid(void) {
-    return CmdCOTAGRead == 1;
+    return CmdCOTAGRead("") > 0;
 }