diff --git a/qse/lib/cmn/Makefile.am b/qse/lib/cmn/Makefile.am
index 5f231f60..c4b1f2b7 100644
--- a/qse/lib/cmn/Makefile.am
+++ b/qse/lib/cmn/Makefile.am
@@ -14,6 +14,7 @@ noinst_HEADERS = \
 	fs.h \
 	mem.h \
 	syscall.h \
+	syserr.h \
 	tre.h \
 	tre-ast.h \
 	tre-compile.h \
diff --git a/qse/lib/cmn/Makefile.in b/qse/lib/cmn/Makefile.in
index 2c19996a..697b99c9 100644
--- a/qse/lib/cmn/Makefile.in
+++ b/qse/lib/cmn/Makefile.in
@@ -342,6 +342,7 @@ noinst_HEADERS = \
 	fs.h \
 	mem.h \
 	syscall.h \
+	syserr.h \
 	tre.h \
 	tre-ast.h \
 	tre-compile.h \