diff --git a/contrib/src/fl/Makefile.in b/contrib/src/fl/Makefile.in
index c1ac8f3190..53d717a272 100644
--- a/contrib/src/fl/Makefile.in
+++ b/contrib/src/fl/Makefile.in
@@ -19,6 +19,7 @@ HEADERS = \
             cbcustom.h \
             dynbarhnd.h \
             dyntbarhnd.h \
+            fldefs.h \
             garbagec.h \
             hintanimpl.h \
             panedrawpl.h \