diff --git a/lib/firmware/authenticator.c b/lib/firmware/authenticator.c
index 94369920..d7485a74 100644
--- a/lib/firmware/authenticator.c
+++ b/lib/firmware/authenticator.c
@@ -59,7 +59,7 @@ static void setAuthData(void) {
   storage_setAuthData(authData);
 }
 
-#ifdef DEBUG_LINK
+#if DEBUG_LINK
 static unsigned _otpSlot = 0;
 void getAuthSlot(char *authSlotData) {
   snprintf(authSlotData, 30, ":slot=%2d:secsiz=%2d:", _otpSlot, authData[_otpSlot].secretSize);
@@ -226,7 +226,7 @@ unsigned generateOTP(char *accountWithMsg, char otpStr[]) {
     return NOACC;       // account not found
   }
 
-#ifdef DEBUG_LINK
+#if DEBUG_LINK
   _otpSlot = slot;   // used to get slot data
 #endif
 
diff --git a/lib/firmware/fsm_msg_common.h b/lib/firmware/fsm_msg_common.h
index 795ed4ed..33cd3e10 100644
--- a/lib/firmware/fsm_msg_common.h
+++ b/lib/firmware/fsm_msg_common.h
@@ -243,7 +243,7 @@ void fsm_msgPing(Ping *msg) {
       case GENOTP:
         //DEBUG_DISPLAY("genotp %s", &msg->message[strlen(authMesStr[authMsg])])
         errcode = generateOTP(&msg->message[strlen(authMesStr[authMsg])], otp);
-      #ifdef DEBUG_LINK
+      #if DEBUG_LINK
         char authSlot[128] = {0};  // debug link only
         getAuthSlot(authSlot);
         resp->has_message = true;