2 files changed, 5 insertions, 3 deletions
diff --git a/src/video/null_v.cpp b/src/video/null_v.cpp
index 6a0abc6b1..81eed708c 100644
--- a/src/video/null_v.cpp
+++ b/src/video/null_v.cpp
@@ -10,11 +10,10 @@
 #include "null_v.h"
 
 static FVideoDriver_Null iFVideoDriver_Null;
-static uint _null_ticks = 0;
 
 const char *VideoDriver_Null::Start(const char* const *parm)
 {
-	_null_ticks = GetDriverParamInt(parm, "ticks", 1000);
+	this->ticks = GetDriverParamInt(parm, "ticks", 1000);
 	_screen.width = _screen.pitch = _cur_resolution[0];
 	_screen.height = _cur_resolution[1];
 	/* Do not render, nor blit */
@@ -31,7 +30,7 @@ void VideoDriver_Null::MainLoop()
 {
 	uint i;
 
-	for (i = 0; i < _null_ticks; i++) {
+	for (i = 0; i < this->ticks; i++) {
 		GameLoop();
 		_screen.dst_ptr = NULL;
 		UpdateWindows();
diff --git a/src/video/null_v.h b/src/video/null_v.h
index b5b21bbbb..d2e8b4b18 100644
--- a/src/video/null_v.h
+++ b/src/video/null_v.h
@@ -6,6 +6,9 @@
 #include "video_driver.hpp"
 
 class VideoDriver_Null: public VideoDriver {
+private:
+	uint ticks;
+
 public:
 	/* virtual */ const char *Start(const char * const *param);