diff --git a/client/src/cmdlfcotag.c b/client/src/cmdlfcotag.c
index 2306b0024..6357561c1 100644
--- a/client/src/cmdlfcotag.c
+++ b/client/src/cmdlfcotag.c
@@ -161,7 +161,7 @@ static int CmdCOTAGReader(const char *Cmd) {
 
     uint8_t timeout = 3;
     int res = PM3_SUCCESS;
-    while (!WaitForResponseTimeout(CMD_LF_COTAG_READ, &resp, 1000)) {
+    while (WaitForResponseTimeout(CMD_LF_COTAG_READ, &resp, 1000) == false) {
         timeout--;
         if (timeout == 0) {
             PrintAndLogEx(NORMAL, "");