diff --git a/layout/html/forms/src/Makefile.in b/layout/html/forms/src/Makefile.in
index bd04896a9539..a17b9d2cc21c 100644
--- a/layout/html/forms/src/Makefile.in
+++ b/layout/html/forms/src/Makefile.in
@@ -28,7 +28,7 @@ include $(DEPTH)/config/autoconf.mk
MODULE = layout
LIBRARY_NAME = gkhtmlforms_s
-REQUIRES = xpcom string locale widget view dom js htmlparser necko webshell caps editor intl uconv exthandler mimetype txmgr xuldoc gfx2 imglib2 accessibility xpconnect
+REQUIRES = xpcom string locale widget view dom js htmlparser necko webshell caps editor intl uconv exthandler mimetype txmgr xuldoc gfx2 imglib2 accessibility xpconnect unicharutil
CPPSRCS = \
nsButtonFrameRenderer.cpp \