diff --git a/src/modules/SX127x.cpp b/src/modules/SX127x.cpp
index a00d23a9..3895cee8 100644
--- a/src/modules/SX127x.cpp
+++ b/src/modules/SX127x.cpp
@@ -10,11 +10,11 @@ int16_t SX127x::begin(uint8_t chipVersion, uint8_t syncWord, uint8_t currentLimi
   
   // try to find the SX127x chip
   if(!SX127x::findChip(chipVersion)) {
-    DEBUG_PRINTLN("No SX127x found!");
+    DEBUG_PRINTLN(F("No SX127x found!"));
     _mod->term();
     return(ERR_CHIP_NOT_FOUND);
   } else {
-    DEBUG_PRINTLN("Found SX127x!");
+    DEBUG_PRINTLN(F("Found SX127x!"));
   }
   
   // check active modem
@@ -54,11 +54,11 @@ int16_t SX127x::beginFSK(uint8_t chipVersion, float br, float freqDev, float rxB
   
   // try to find the SX127x chip
   if(!SX127x::findChip(chipVersion)) {
-    DEBUG_PRINTLN("No SX127x found!");
+    DEBUG_PRINTLN(F("No SX127x found!"));
     _mod->term();
     return(ERR_CHIP_NOT_FOUND);
   } else {
-    DEBUG_PRINTLN("Found SX127x!");
+    DEBUG_PRINTLN(F("Found SX127x!"));
   }
   
   // check currently active modem