@@ -22,10 +22,11 @@
 #import "OFLocalization.h"
 #import "OFString.h"
 #import "OFArray.h"
 #import "OFDictionary.h"
 
+#import "OFInitializationFailedException.h"
 #import "OFInvalidArgumentException.h"
 #import "OFInvalidEncodingException.h"
 #import "OFOpenItemFailedException.h"
 
 #ifdef OF_MORPHOS
@@ -126,10 +127,14 @@
 
 	@try {
 #ifndef OF_MORPHOS
 		char *locale, *messagesLocale = NULL;
 
+		if (sharedLocalization != nil)
+			@throw [OFInitializationFailedException
+			    exceptionWithClass: [OFLocalization class]];
+
 		_encoding = OF_STRING_ENCODING_UTF_8;
 		_decimalPoint = @".";
 		_localizedStrings = [[OFMutableArray alloc] init];
 
 		if ((locale = setlocale(LC_ALL, "")) != NULL)