diff --git a/extensions/universalchardet/src/xpcom/nsUdetXPCOMWrapper.h b/extensions/universalchardet/src/xpcom/nsUdetXPCOMWrapper.h
index b6f96d00109d..80c8272c67cd 100644
--- a/extensions/universalchardet/src/xpcom/nsUdetXPCOMWrapper.h
+++ b/extensions/universalchardet/src/xpcom/nsUdetXPCOMWrapper.h
@@ -13,14 +13,6 @@
 #include "nsIFactory.h"
 #include "nsUniversalDetector.h"
 
-// {12BB8F1B-2389-11d3-B3BF-00805F8A6670}
-#define NS_JA_PSMDETECTOR_CID \
-{ 0x12bb8f1b, 0x2389, 0x11d3, { 0xb3, 0xbf, 0x0, 0x80, 0x5f, 0x8a, 0x66, 0x70 } }
-
-// {12BB8F1C-2389-11d3-B3BF-00805F8A6670}
-#define NS_JA_STRING_PSMDETECTOR_CID \
-{ 0x12bb8f1c, 0x2389, 0x11d3, { 0xb3, 0xbf, 0x0, 0x80, 0x5f, 0x8a, 0x66, 0x70 } }
-
 //=====================================================================
 class nsXPCOMDetector :
       public nsUniversalDetector,
diff --git a/intl/chardet/nsCyrillicDetector.h b/intl/chardet/nsCyrillicDetector.h
index 3829d6685bd1..c9a422e920ee 100644
--- a/intl/chardet/nsCyrillicDetector.h
+++ b/intl/chardet/nsCyrillicDetector.h
@@ -8,22 +8,6 @@
 #include "nsCyrillicClass.h"
 #include "nsIStringCharsetDetector.h"
 
-// {2002F781-3960-11d3-B3C3-00805F8A6670}
-#define NS_RU_PROBDETECTOR_CID \
-{ 0x2002f781, 0x3960, 0x11d3, { 0xb3, 0xc3, 0x0, 0x80, 0x5f, 0x8a, 0x66, 0x70 } }
-
-// {2002F782-3960-11d3-B3C3-00805F8A6670}
-#define NS_UK_PROBDETECTOR_CID \
-{ 0x2002f782, 0x3960, 0x11d3, { 0xb3, 0xc3, 0x0, 0x80, 0x5f, 0x8a, 0x66, 0x70 } }
-
-// {2002F783-3960-11d3-B3C3-00805F8A6670}
-#define NS_RU_STRING_PROBDETECTOR_CID \
-{ 0x2002f783, 0x3960, 0x11d3, { 0xb3, 0xc3, 0x0, 0x80, 0x5f, 0x8a, 0x66, 0x70 } }
-
-// {2002F784-3960-11d3-B3C3-00805F8A6670}
-#define NS_UK_STRING_PROBDETECTOR_CID \
-{ 0x2002f784, 0x3960, 0x11d3, { 0xb3, 0xc3, 0x0, 0x80, 0x5f, 0x8a, 0x66, 0x70 } }
-
 static const uint8_t *gCyrillicCls[5] =
 {
    CP1251Map,