diff --git a/Marlin/src/feature/power_loss_recovery.cpp b/Marlin/src/feature/power_loss_recovery.cpp
index ebaa1dfc1..305b79f52 100644
--- a/Marlin/src/feature/power_loss_recovery.cpp
+++ b/Marlin/src/feature/power_loss_recovery.cpp
@@ -35,6 +35,7 @@ bool PrintJobRecovery::enabled; // Initialized by settings.load()
 
 SdFile PrintJobRecovery::file;
 job_recovery_info_t PrintJobRecovery::info;
+const char PrintJobRecovery::filename[5] = "/PLR";
 
 #include "../sd/cardreader.h"
 #include "../lcd/ultralcd.h"
diff --git a/Marlin/src/feature/power_loss_recovery.h b/Marlin/src/feature/power_loss_recovery.h
index 993a8dbb3..d58285e56 100644
--- a/Marlin/src/feature/power_loss_recovery.h
+++ b/Marlin/src/feature/power_loss_recovery.h
@@ -103,7 +103,7 @@ typedef struct {
 
 class PrintJobRecovery {
   public:
-    static constexpr char filename[5] = "/PLR";
+    static const char filename[5];
 
     static SdFile file;
     static job_recovery_info_t info;