diff --git a/src/frontend/Makefile.am b/src/frontend/Makefile.am
index f5a07666c..01f55efdb 100644
--- a/src/frontend/Makefile.am
+++ b/src/frontend/Makefile.am
@@ -114,7 +114,6 @@ libfte_la_SOURCES =	\
 	dotcards.c	\
 	dotcards.h	\
 	error.c		\
-	error.h		\
 	evaluate.c	\
 	evaluate.h	\
 	fourier.c	\