diff --git a/mozilla/layout/base/public/nsIFrameUtil.h b/mozilla/layout/base/public/nsIFrameUtil.h
index 6387450fb40..d87fc6e5d2c 100644
--- a/mozilla/layout/base/public/nsIFrameUtil.h
+++ b/mozilla/layout/base/public/nsIFrameUtil.h
@@ -24,7 +24,7 @@ class nsIURL;
 
 /* a6cf90d4-15b3-11d2-932e-00805f8add32 */
 #define NS_IFRAME_UTIL_IID \
- { 0xa6cf90d4, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
+ { 0xa6cf90d6, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
 
 /**
  * Frame utility interface
diff --git a/mozilla/layout/generic/nsIFrameUtil.h b/mozilla/layout/generic/nsIFrameUtil.h
index 6387450fb40..d87fc6e5d2c 100644
--- a/mozilla/layout/generic/nsIFrameUtil.h
+++ b/mozilla/layout/generic/nsIFrameUtil.h
@@ -24,7 +24,7 @@ class nsIURL;
 
 /* a6cf90d4-15b3-11d2-932e-00805f8add32 */
 #define NS_IFRAME_UTIL_IID \
- { 0xa6cf90d4, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
+ { 0xa6cf90d6, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
 
 /**
  * Frame utility interface