diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 66649cbae..2b4367c91 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -5074,9 +5074,9 @@ FurnaceGUI::FurnaceGUI():
   memset(emptyLabel,0,32);
   memset(emptyLabel2,0,32);
 
-  strncat(noteOffLabel,"OFF",32);
-  strncat(noteRelLabel,"===",32);
-  strncat(macroRelLabel,"REL",32);
-  strncat(emptyLabel,"...",32);
-  strncat(emptyLabel2,"..",32);
+  strncpy(noteOffLabel,"OFF",32);
+  strncpy(noteRelLabel,"===",32);
+  strncpy(macroRelLabel,"REL",32);
+  strncpy(emptyLabel,"...",32);
+  strncpy(emptyLabel2,"..",32);
 }
diff --git a/src/gui/settings.cpp b/src/gui/settings.cpp
index 6c300d0a4..ee35fd86c 100644
--- a/src/gui/settings.cpp
+++ b/src/gui/settings.cpp
@@ -2781,7 +2781,7 @@ void setupLabel(const char* lStr, char* label, int len) {
   memset(label,0,32);
   for (int i=0, p=0; i<len; i++) {
     signed char cl;
-    if (lStr[p]!=0) {
+    if (lStr[p]==0) {
       strncat(label," ",32);
     } else {
       decodeUTF8((const unsigned char*)&lStr[p],cl);