diff --git a/Makefile.am b/Makefile.am
index 8b6b711c..1bc689e0 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -35,7 +35,7 @@ WIDGETS += widgets/progressbar.c
 WIDGETS += widgets/tasklist.c
 WIDGETS += widgets/graph.c
 WIDGETS += widgets/emptybox.c
-WIDGETS += widgets/common.c
+WIDGETS += widgets/common.c widgets/common.h
 
 
 doc_DATA   += README