diff --git a/rtmp/RTMPWrapper.c b/rtmp/RTMPWrapper.c
index 0b0750a8..8679f04c 100644
--- a/rtmp/RTMPWrapper.c
+++ b/rtmp/RTMPWrapper.c
@@ -65,7 +65,7 @@ unsigned int RTMP_start_session(char* url, uint connect_timeout){
 }
 
 unsigned int RTMP_write_frame(char* data, uint data_length){
-  dataForC = malloc(data_length);
+  char* dataForC = malloc(data_length);
   memcpy(dataForC,data,data_length);
   if (!RTMP_IsConnected(rtmp)) {
     printf("RTMP is not connected!\n");