diff --git a/ArmPkg/Filesystem/SemihostFs/Arm/SemihostFs.c b/ArmPkg/Filesystem/SemihostFs/Arm/SemihostFs.c
index 3d6e72aa5a..b865143c74 100644
--- a/ArmPkg/Filesystem/SemihostFs/Arm/SemihostFs.c
+++ b/ArmPkg/Filesystem/SemihostFs/Arm/SemihostFs.c
@@ -204,7 +204,7 @@ FileOpen (
 
     // Add the creation flag if necessary
     if (OpenMode & EFI_FILE_MODE_CREATE) {
-      SemihostMode |= SEMIHOST_FILE_MODE_CREATE;
+      SemihostMode |= SEMIHOST_FILE_MODE_UPDATE;
     }
 
     // Call the semihosting interface to open the file.
diff --git a/ArmPkg/Include/Library/SemihostLib.h b/ArmPkg/Include/Library/SemihostLib.h
index 4026f51736..4e4f43d8bd 100644
--- a/ArmPkg/Include/Library/SemihostLib.h
+++ b/ArmPkg/Include/Library/SemihostLib.h
@@ -26,7 +26,7 @@
 #define SEMIHOST_FILE_MODE_READ     (0 << 2)
 #define SEMIHOST_FILE_MODE_WRITE    (1 << 2)
 #define SEMIHOST_FILE_MODE_APPEND   (2 << 2)
-#define SEMIHOST_FILE_MODE_CREATE   (1 << 1)
+#define SEMIHOST_FILE_MODE_UPDATE   (1 << 1)
 #define SEMIHOST_FILE_MODE_BINARY   (1 << 0)
 #define SEMIHOST_FILE_MODE_ASCII    (0 << 0)
 
diff --git a/ArmPkg/Library/RvdPeCoffExtraActionLib/RvdPeCoffExtraActionLib.c b/ArmPkg/Library/RvdPeCoffExtraActionLib/RvdPeCoffExtraActionLib.c
index dc66abd513..abe3c378d7 100644
--- a/ArmPkg/Library/RvdPeCoffExtraActionLib/RvdPeCoffExtraActionLib.c
+++ b/ArmPkg/Library/RvdPeCoffExtraActionLib/RvdPeCoffExtraActionLib.c
@@ -49,7 +49,7 @@ WriteStringToFile (
   I'm currently having issues with this code crashing the debugger. Seems like it should work.
 
   UINT32        SemihostHandle;
-  UINT32        SemihostMode = SEMIHOST_FILE_MODE_WRITE | SEMIHOST_FILE_MODE_BINARY | SEMIHOST_FILE_MODE_CREATE;
+  UINT32        SemihostMode = SEMIHOST_FILE_MODE_WRITE | SEMIHOST_FILE_MODE_BINARY | SEMIHOST_FILE_MODE_UPDATE;
 
   SemihostFileOpen ("c:\rvi_symbols.inc", SemihostMode, &SemihostHandle);
   SemihostFileWrite (SemihostHandle, &Length, Buffer);