diff --git a/visualizer/Android.mk b/visualizer/Android.mk
index 29a093e..3b856e3 100644
--- a/visualizer/Android.mk
+++ b/visualizer/Android.mk
@@ -27,6 +27,8 @@
 	libdl \
 	libtinyalsa
 
+LOCAL_HEADER_LIBRARIES := libhardware_headers
+
 LOCAL_MODULE_RELATIVE_PATH := soundfx
 LOCAL_MODULE:= libqcomvisualizer
 LOCAL_MODULE_OWNER := qcom
diff --git a/visualizer/offload_visualizer.c b/visualizer/offload_visualizer.c
index 4d1373f..ab269ff 100644
--- a/visualizer/offload_visualizer.c
+++ b/visualizer/offload_visualizer.c
@@ -17,12 +17,14 @@
 #define LOG_TAG "offload_visualizer"
 /*#define LOG_NDEBUG 0*/
 #include <assert.h>
+#include <dlfcn.h>
 #include <math.h>
+#include <pthread.h>
 #include <stdlib.h>
 #include <string.h>
-#include <time.h>
 #include <sys/prctl.h>
-#include <dlfcn.h>
+#include <time.h>
+#include <unistd.h>
 
 #include <cutils/list.h>
 #include <cutils/log.h>