diff --git a/src/sound_sb_dsp.c b/src/sound_sb_dsp.c
index 1849711..5b2a326 100644
--- a/src/sound_sb_dsp.c
+++ b/src/sound_sb_dsp.c
@@ -507,7 +507,7 @@ void sb_exec_command(sb_dsp_t *dsp)
                 sb_add_data(dsp, 0);
                 break;
                 case 0xF9:
-                if (dsp->sb_type < SB16) break;
+                if (dsp->sb_type >= SB16) break;
                 if (dsp->sb_data[0] == 0x0e)      sb_add_data(dsp, 0xff);
                 else if (dsp->sb_data[0] == 0x0f) sb_add_data(dsp, 0x07);
                 else if (dsp->sb_data[0] == 0x37) sb_add_data(dsp, 0x38);