diff --git a/skeletons/Makefile.am b/skeletons/Makefile.am
index 9b5b7009..2d906951 100644
--- a/skeletons/Makefile.am
+++ b/skeletons/Makefile.am
@@ -33,15 +33,17 @@ libasn1cskeletons_la_SOURCES = 				\
 	GraphicString.c GraphicString.h			\
 	IA5String.c IA5String.h				\
 	INTEGER.c INTEGER.h				\
-	INTEGER_oer.c INTEGER_oer.h			\
+	INTEGER_oer.c \
 	ISO646String.c ISO646String.h			\
 	NULL.c NULL.h					\
 	NativeEnumerated.c NativeEnumerated.h		\
 	NativeInteger.c NativeInteger.h			\
+	NativeInteger_oer.c \
 	NativeReal.c NativeReal.h			\
 	NumericString.c NumericString.h			\
 	OBJECT_IDENTIFIER.c OBJECT_IDENTIFIER.h		\
-	OCTET_STRING.c OCTET_STRING.h			\
+	OCTET_STRING.c OCTET_STRING.h	\
+    OCTET_STRING_oer.c \
 	ObjectDescriptor.c ObjectDescriptor.h		\
 	PrintableString.c PrintableString.h		\
 	REAL.c REAL.h					\
@@ -63,7 +65,7 @@ libasn1cskeletons_la_SOURCES = 				\
 	ber_tlv_tag.c ber_tlv_tag.h			\
 	constr_CHOICE.c constr_CHOICE.h			\
 	constr_SEQUENCE.c constr_SEQUENCE.h		\
-	constr_SEQUENCE_oer.c constr_SEQUENCE_oer.h	\
+	constr_SEQUENCE_oer.c \
 	constr_SEQUENCE_OF.c constr_SEQUENCE_OF.h	\
 	constr_SET.c constr_SET.h			\
 	constr_SET_OF.c constr_SET_OF.h			\