diff --git a/src/common/intl.cpp b/src/common/intl.cpp
index 745cff6944..8a77c3d522 100644
--- a/src/common/intl.cpp
+++ b/src/common/intl.cpp
@@ -629,11 +629,6 @@ inline bool wxGetNonEmptyEnvVar(const wxString& name, wxString* value)
         return wxLANGUAGE_ENGLISH_US;
     }
 
-    if ( langFull == wxS("C") || langFull == wxS("POSIX") )
-    {
-        // default C locale is English too
-        return wxLANGUAGE_ENGLISH_US;
-    }
 #endif
 
     // the language string has the following form
@@ -669,6 +664,12 @@ inline bool wxGetNonEmptyEnvVar(const wxString& name, wxString* value)
         langFull.Truncate(posEndLang);
     }
 
+    if ( langFull == wxS("C") || langFull == wxS("POSIX") )
+    {
+        // default C locale is English too
+        return wxLANGUAGE_ENGLISH_US;
+    }
+
     // do we have just the language (or sublang too)?
     const bool justLang = langFull.find('_') == wxString::npos;