diff --git a/Makefile.am b/Makefile.am
index 7a29d54a..09a87c92 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -17,6 +17,10 @@ SILK_SOURCES += $(SILK_SOURCES_FLOAT)
 OPUS_SOURCES += $(OPUS_SOURCES_FLOAT)
 endif
 
+include celt_headers.mk
+include silk_headers.mk
+include opus_headers.mk
+
 libopus_la_SOURCES = $(CELT_SOURCES) $(SILK_SOURCES) $(OPUS_SOURCES)
 
 pkginclude_HEADERS = include/opus.h include/opus_multistream.h include/opus_types.h include/opus_defines.h
diff --git a/opus_headers.mk b/opus_headers.mk
index f160710c..43a978cd 100644
--- a/opus_headers.mk
+++ b/opus_headers.mk
@@ -1,4 +1,7 @@
 OPUS_HEAD = \
 include/opus.h \
 include/opus_multistream.h \
-src/opus_private.h
+src/opus_private.h \
+src/analysis.h \
+src/mlp.h \
+src/tansig_table.h