diff --git a/src/sound_sb.c b/src/sound_sb.c
index 23597e67e..ca7b0b6c4 100644
--- a/src/sound_sb.c
+++ b/src/sound_sb.c
@@ -493,10 +493,10 @@ void *sb_16_init()
         sb_dsp_setdma8(&sb->dsp, device_get_config_int("dma"));
         sb_dsp_setdma16(&sb->dsp, device_get_config_int("dma16"));
         sb_mixer_init(&sb->mixer);
-        io_sethandler(0x0220, 0x0004, opl3_read,   NULL, NULL, opl3_write,   NULL, NULL, &sb->opl);
-        io_sethandler(0x0228, 0x0002, opl3_read,   NULL, NULL, opl3_write,   NULL, NULL, &sb->opl);
+        io_sethandler(addr + 0, 0x0004, opl3_read,   NULL, NULL, opl3_write,   NULL, NULL, &sb->opl);
+        io_sethandler(addr + 8, 0x0002, opl3_read,   NULL, NULL, opl3_write,   NULL, NULL, &sb->opl);
         io_sethandler(0x0388, 0x0004, opl3_read,   NULL, NULL, opl3_write,   NULL, NULL, &sb->opl);
-        io_sethandler(0x0224, 0x0002, sb_16_mixer_read, NULL, NULL, sb_16_mixer_write, NULL, NULL, sb);
+        io_sethandler(addr + 4, 0x0002, sb_16_mixer_read, NULL, NULL, sb_16_mixer_write, NULL, NULL, sb);
         sound_add_handler(sb_get_buffer_opl3, sb);
         mpu401_uart_init(&sb->mpu, device_get_config_int("addr401"));
 
@@ -536,10 +536,10 @@ void *sb_awe32_init()
         sb_dsp_setdma8(&sb->dsp, device_get_config_int("dma"));
         sb_dsp_setdma16(&sb->dsp, device_get_config_int("dma16"));
         sb_mixer_init(&sb->mixer);
-        io_sethandler(0x0220, 0x0004, opl3_read,   NULL, NULL, opl3_write,   NULL, NULL, &sb->opl);
-        io_sethandler(0x0228, 0x0002, opl3_read,   NULL, NULL, opl3_write,   NULL, NULL, &sb->opl);
+        io_sethandler(addr + 0, 0x0004, opl3_read,   NULL, NULL, opl3_write,   NULL, NULL, &sb->opl);
+        io_sethandler(addr + 8, 0x0002, opl3_read,   NULL, NULL, opl3_write,   NULL, NULL, &sb->opl);
         io_sethandler(0x0388, 0x0004, opl3_read,   NULL, NULL, opl3_write,   NULL, NULL, &sb->opl);
-        io_sethandler(0x0224, 0x0002, sb_16_mixer_read, NULL, NULL, sb_16_mixer_write, NULL, NULL, sb);
+        io_sethandler(addr + 4, 0x0002, sb_16_mixer_read, NULL, NULL, sb_16_mixer_write, NULL, NULL, sb);
         sound_add_handler(sb_get_buffer_emu8k, sb);
         mpu401_uart_init(&sb->mpu, device_get_config_int("addr401"));
         emu8k_init(&sb->emu8k, onboard_ram);