diff --git a/opl/opl_sdl.c b/opl/opl_sdl.c
index 6a0fd11a..09803a17 100644
--- a/opl/opl_sdl.c
+++ b/opl/opl_sdl.c
@@ -254,7 +254,7 @@ static void WriteRegister(unsigned int reg_num, unsigned int value)
 
                 if ((value & 0x20) == 0)
                 {
-                    timer1.enabled = (value & 0x02) != 0;
+                    timer2.enabled = (value & 0x02) != 0;
                     OPLTimer_CalculateEndTime(&timer2);
                 }
             }