diff --git a/voip/jni/rtp/AmrCodec.cpp b/voip/jni/rtp/AmrCodec.cpp
index f3ecac25b1f9f..72ee44e69f7a4 100644
--- a/voip/jni/rtp/AmrCodec.cpp
+++ b/voip/jni/rtp/AmrCodec.cpp
@@ -73,7 +73,7 @@ int AmrCodec::set(int sampleRate, const char *fmtp)
     }
 
     // Handle mode-set and octet-align.
-    char *modes = strcasestr(fmtp, "mode-set=");
+    char *modes = (char*)strcasestr(fmtp, "mode-set=");
     if (modes) {
         mMode = 0;
         mModeSet = 0;
diff --git a/voip/jni/rtp/EchoSuppressor.cpp b/voip/jni/rtp/EchoSuppressor.cpp
index 92015a9eb2408..a1a7aed82b799 100644
--- a/voip/jni/rtp/EchoSuppressor.cpp
+++ b/voip/jni/rtp/EchoSuppressor.cpp
@@ -15,6 +15,7 @@
  */
 
 #include <stdio.h>
+#include <string.h>
 #include <stdint.h>
 #include <math.h>