diff --git a/src/dec/Makefile.am b/src/dec/Makefile.am
index 8a17c8e9..e053b9a1 100644
--- a/src/dec/Makefile.am
+++ b/src/dec/Makefile.am
@@ -13,14 +13,15 @@ libwebpdecode_la_SOURCES += tree.c
 libwebpdecode_la_SOURCES += vp8.c
 libwebpdecode_la_SOURCES += vp8i.h
 libwebpdecode_la_SOURCES += vp8l.c
+libwebpdecode_la_SOURCES += vp8li.h
 libwebpdecode_la_SOURCES += webp.c
 libwebpdecode_la_SOURCES += webpi.h
 
 libwebpdecodeinclude_HEADERS =
 libwebpdecodeinclude_HEADERS += ../webp/decode.h
 libwebpdecodeinclude_HEADERS += ../webp/decode_vp8.h
-libwebpdecodeinclude_HEADERS += ../webp/mux.h
 libwebpdecodeinclude_HEADERS += ../webp/types.h
+noinst_HEADERS = ../webp/mux.h
 
 libwebpdecode_la_CPPFLAGS = $(USE_EXPERIMENTAL_CODE)
 libwebpdecodeincludedir = $(includedir)/webp
diff --git a/src/dsp/Makefile.am b/src/dsp/Makefile.am
index e918ecb7..2ff6a388 100644
--- a/src/dsp/Makefile.am
+++ b/src/dsp/Makefile.am
@@ -17,6 +17,9 @@ libwebpdsp_la_SOURCES += yuv.c
 libwebpdsp_la_SOURCES += yuv.h
 
 libwebpdspinclude_HEADERS = ../webp/types.h
+noinst_HEADERS =
+noinst_HEADERS += ../webp/decode.h
+noinst_HEADERS += ../webp/decode_vp8.h
 
 libwebpdsp_la_LDFLAGS = -lm
 libwebpdsp_la_CPPFLAGS = $(USE_EXPERIMENTAL_CODE)
diff --git a/src/enc/Makefile.am b/src/enc/Makefile.am
index 5a3d293f..de51fa73 100644
--- a/src/enc/Makefile.am
+++ b/src/enc/Makefile.am
@@ -20,8 +20,8 @@ libwebpencode_la_SOURCES += webpenc.c
 
 libwebpencodeinclude_HEADERS =
 libwebpencodeinclude_HEADERS += ../webp/encode.h
-libwebpencodeinclude_HEADERS += ../webp/mux.h
 libwebpencodeinclude_HEADERS += ../webp/types.h
+noinst_HEADERS = ../webp/mux.h
 
 libwebpencode_la_LDFLAGS = -lm
 libwebpencode_la_CPPFLAGS = $(USE_EXPERIMENTAL_CODE)