diff --git a/layout/base/src/Makefile.in b/layout/base/src/Makefile.in
index c97cfe3ada62..783142bbc0c5 100644
--- a/layout/base/src/Makefile.in
+++ b/layout/base/src/Makefile.in
@@ -58,6 +58,7 @@ CPPSRCS		= \
 		nsStyleCoord.cpp \
 		nsStyleContext.cpp \
 		nsStyleSet.cpp \
+		nsTextContentChangeData.cpp \
 		nsTextFragment.cpp \
 		nsTextNode.cpp \
 		nsXIFConverter.cpp \