diff --git a/contrib/src/stc/stc.cpp b/contrib/src/stc/stc.cpp
index ab42de2dfe..93a193a70c 100644
--- a/contrib/src/stc/stc.cpp
+++ b/contrib/src/stc/stc.cpp
@@ -2144,20 +2144,16 @@ bool wxStyledTextCtrl::LoadFile(const wxString& filename)
     if (file.IsOpened())
     {
         wxString contents;
-#if wxUSE_UNICODE
-        wxMemoryBuffer buffer;
-#else
-        wxString buffer;
-#endif
         off_t len = file.Length();
         if (len > 0)
         {
-            void *bufptr = buffer.GetWriteBuf(len);
-            success = (file.Read(bufptr, len) == len);
-            buffer.UngetWriteBuf(len);
 #if wxUSE_UNICODE
+            wxMemoryBuffer buffer(len);
+            success = (file.Read(buffer.GetData(), len) == len);
             contents = wxString(buffer, *wxConvCurrent);
 #else
+            wxString buffer;
+            success = (file.Read(wxStringBuffer(buffer, len), len) == len);
             contents = buffer;
 #endif
         }
diff --git a/contrib/src/stc/stc.cpp.in b/contrib/src/stc/stc.cpp.in
index 4cc177306f..9b9825a9db 100644
--- a/contrib/src/stc/stc.cpp.in
+++ b/contrib/src/stc/stc.cpp.in
@@ -349,20 +349,16 @@ bool wxStyledTextCtrl::LoadFile(const wxString& filename)
     if (file.IsOpened())
     {
         wxString contents;
-#if wxUSE_UNICODE
-        wxMemoryBuffer buffer;
-#else
-        wxString buffer;
-#endif
         off_t len = file.Length();
         if (len > 0)
         {
-            void *bufptr = buffer.GetWriteBuf(len);
-            success = (file.Read(bufptr, len) == len);
-            buffer.UngetWriteBuf(len);
 #if wxUSE_UNICODE
+            wxMemoryBuffer buffer(len);
+            success = (file.Read(buffer.GetData(), len) == len);
             contents = wxString(buffer, *wxConvCurrent);
 #else
+            wxString buffer;
+            success = (file.Read(wxStringBuffer(buffer, len), len) == len);
             contents = buffer;
 #endif
         }
diff --git a/src/stc/stc.cpp b/src/stc/stc.cpp
index ab42de2dfe..93a193a70c 100644
--- a/src/stc/stc.cpp
+++ b/src/stc/stc.cpp
@@ -2144,20 +2144,16 @@ bool wxStyledTextCtrl::LoadFile(const wxString& filename)
     if (file.IsOpened())
     {
         wxString contents;
-#if wxUSE_UNICODE
-        wxMemoryBuffer buffer;
-#else
-        wxString buffer;
-#endif
         off_t len = file.Length();
         if (len > 0)
         {
-            void *bufptr = buffer.GetWriteBuf(len);
-            success = (file.Read(bufptr, len) == len);
-            buffer.UngetWriteBuf(len);
 #if wxUSE_UNICODE
+            wxMemoryBuffer buffer(len);
+            success = (file.Read(buffer.GetData(), len) == len);
             contents = wxString(buffer, *wxConvCurrent);
 #else
+            wxString buffer;
+            success = (file.Read(wxStringBuffer(buffer, len), len) == len);
             contents = buffer;
 #endif
         }
diff --git a/src/stc/stc.cpp.in b/src/stc/stc.cpp.in
index 4cc177306f..9b9825a9db 100644
--- a/src/stc/stc.cpp.in
+++ b/src/stc/stc.cpp.in
@@ -349,20 +349,16 @@ bool wxStyledTextCtrl::LoadFile(const wxString& filename)
     if (file.IsOpened())
     {
         wxString contents;
-#if wxUSE_UNICODE
-        wxMemoryBuffer buffer;
-#else
-        wxString buffer;
-#endif
         off_t len = file.Length();
         if (len > 0)
         {
-            void *bufptr = buffer.GetWriteBuf(len);
-            success = (file.Read(bufptr, len) == len);
-            buffer.UngetWriteBuf(len);
 #if wxUSE_UNICODE
+            wxMemoryBuffer buffer(len);
+            success = (file.Read(buffer.GetData(), len) == len);
             contents = wxString(buffer, *wxConvCurrent);
 #else
+            wxString buffer;
+            success = (file.Read(wxStringBuffer(buffer, len), len) == len);
             contents = buffer;
 #endif
         }