diff --git a/Makefile.am b/Makefile.am
index 87551485fa..1d8eac5dc7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -818,6 +818,7 @@ include_HEADERS = \
 	lib/vparse.h \
 	lib/wildmat.h \
 	lib/xmalloc.h \
+	lib/xsha1.h \
 	lib/xunlink.h
 
 nodist_include_HEADERS = \
@@ -834,7 +835,6 @@ noinst_HEADERS += \
 	lib/prot.h \
 	lib/ptrarray.h \
 	lib/util.h \
-	lib/xsha1.h \
 	lib/xstrlcat.h \
 	lib/xstrlcpy.h \
 	lib/xstrnchr.h