1 files changed, 2 insertions, 2 deletions

diff --git a/toxav/msi.h b/toxav/msi.h
index 0020df4c..428f7d9c 100644
--- a/toxav/msi.h
+++ b/toxav/msi.h
@@ -77,7 +77,7 @@ typedef struct _MSICall {                  /* Call info structure */
     int                 ringing_timer_id;  /* Timer id for ringing timeout */
 
 
-    pthread_mutex_t     mutex;             /* */
+    pthread_mutex_t     mutex[1];             /* */
     uint32_t           *peers;
     uint16_t            peer_count;
 
@@ -104,7 +104,7 @@ typedef struct _MSISession {
     uint32_t frequ;
     uint32_t call_timeout; /* Time of the timeout for some action to end; 0 if infinite */
 
-    pthread_mutex_t mutex;
+    pthread_mutex_t mutex[1];
 
     void *timer_handler;
 } MSISession;