Index: /trunk/src/VBox/Devices/EFI/DevEFI.cpp
===================================================================
--- /trunk/src/VBox/Devices/EFI/DevEFI.cpp	(revision 26207)
+++ /trunk/src/VBox/Devices/EFI/DevEFI.cpp	(revision 26208)
@@ -116,5 +116,5 @@
     /* Device properties string */
     char*           pszDeviceProps;
-    
+
     /* Virtual machine front side bus frequency */
     uint64_t        u64FsbFrequency;
@@ -211,5 +211,5 @@
             break;
     }
-    
+
     return *((uint8_t*)&value+pThis->iInfoPosition);
 }
@@ -1000,5 +1000,5 @@
         AssertRCReturn(rc, rc);
 
-        size_t offFilename = strlen(pThis->pszEfiRomFile);
+        size_t offFilename = RTStrNLen(pThis->pszEfiRomFile, RTPATH_MAX);
         strcpy(pThis->pszEfiRomFile+offFilename, "/VBoxEFI32.fd");
         rc = VINF_SUCCESS;