diff --git a/src/common/file.cpp b/src/common/file.cpp
index 2405ed9822..45ab8ade8c 100644
--- a/src/common/file.cpp
+++ b/src/common/file.cpp
@@ -367,7 +367,7 @@ wxFileOffset wxFile::Seek(wxFileOffset ofs, wxSeekMode mode)
     int origin;
     switch ( mode ) {
         default:
-            wxFAIL_MSG(_("unknown seek origin"));
+            wxFAIL_MSG(_T("unknown seek origin"));
 
         case wxFromStart:
             origin = SEEK_SET;
@@ -459,7 +459,7 @@ bool wxFile::Eof() const
     else if ( iRc == wxInvalidOffset )
         wxLogSysError(_("can't determine if the end of file is reached on descriptor %d"), m_fd);
     else
-        wxFAIL_MSG(_("invalid eof() return value."));
+        wxFAIL_MSG(_T("invalid eof() return value."));
 
     return true;
 }
diff --git a/src/common/textbuf.cpp b/src/common/textbuf.cpp
index 8c7253e8b6..17e00fac41 100644
--- a/src/common/textbuf.cpp
+++ b/src/common/textbuf.cpp
@@ -226,7 +226,7 @@ wxTextFileType wxTextBuffer::GuessType() const
             case wxTextFileType_Unix: nUnix++; break;   \
             case wxTextFileType_Dos:  nDos++;  break;   \
             case wxTextFileType_Mac:  nMac++;  break;   \
-            default: wxFAIL_MSG(_("unknown line terminator")); \
+            default: wxFAIL_MSG(_T("unknown line terminator")); \
         }
 
     size_t n;