diff --git a/Makefile.am b/Makefile.am
index 56d41d0..be9c5d0 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5,11 +5,14 @@ pkgconfig_DATA = webrtc-audio-processing.pc
 
 webrtcincludedir = $(includedir)/webrtc_audio_processing
 nobase_webrtcinclude_HEADERS = webrtc/base/arraysize.h \
+			       webrtc/base/constructormagic.h \
 			       webrtc/base/basictypes.h \
 			       webrtc/base/platform_file.h \
 			       webrtc/common.h \
+			       webrtc/common_types.h \
 			       webrtc/typedefs.h \
 			       webrtc/modules/audio_processing/beamformer/array_util.h \
-			       webrtc/modules/audio_processing/include/audio_processing.h
+			       webrtc/modules/audio_processing/include/audio_processing.h \
+			       webrtc/modules/interface/module_common_types.h
 # FIXME: We should deprecate installing this to the top directory soon
 webrtcinclude_HEADERS = webrtc/modules/audio_processing/include/audio_processing.h
diff --git a/webrtc-audio-processing.pc.in b/webrtc-audio-processing.pc.in
index 662c514..aa18ddc 100644
--- a/webrtc-audio-processing.pc.in
+++ b/webrtc-audio-processing.pc.in
@@ -7,4 +7,4 @@ Name: webrtc-audio-processing
 Description: WebRTC Audio Processing library
 Version: @PACKAGE_VERSION@
 Libs: -L${libdir} -lwebrtc_audio_processing
-Cflags: -I${includedir}/webrtc_audio_processing @PLATFORM_CFLAGS@
+Cflags: -DWEBRTC_AUDIO_PROCESSING_ONLY_BUILD -I${includedir}/webrtc_audio_processing @PLATFORM_CFLAGS@