diff --git a/src/libguac/guacamole/socket.h b/src/libguac/guacamole/socket.h
index 13768595..8cd443b2 100644
--- a/src/libguac/guacamole/socket.h
+++ b/src/libguac/guacamole/socket.h
@@ -39,7 +39,6 @@
 #define _GUAC_SOCKET_H
 
 #include <pthread.h>
-#include <stdbool.h>
 #include <stdint.h>
 #include <unistd.h>
 
@@ -193,7 +192,7 @@ struct guac_socket {
      * Whether instructions should be guaranteed atomic across threads using
      * locks. By default, thread safety is disabled on sockets.
      */
-    bool __threadsafe_instructions;
+    int __threadsafe_instructions;
 
     /**
      * Lock which is acquired when an instruction is being written, and
diff --git a/src/libguac/socket.c b/src/libguac/socket.c
index 63193bb2..fc10afe9 100644
--- a/src/libguac/socket.c
+++ b/src/libguac/socket.c
@@ -157,7 +157,7 @@ guac_socket* guac_socket_alloc() {
 
 
     /* Default to unsafe threading */
-    socket->__threadsafe_instructions = false;
+    socket->__threadsafe_instructions = 0;
     pthread_mutex_init(&(socket->__instruction_write_lock), NULL);
     
     /* No handlers yet */
@@ -171,7 +171,7 @@ guac_socket* guac_socket_alloc() {
 }
 
 void guac_socket_require_threadsafe(guac_socket* socket) {
-    socket->__threadsafe_instructions = true;
+    socket->__threadsafe_instructions = 1;
 }
 
 void guac_socket_instruction_begin(guac_socket* socket) {