diff --git a/board/siemens/IAD210/atm.c b/board/siemens/IAD210/atm.c
index e599c10..40aad0a 100644
--- a/board/siemens/IAD210/atm.c
+++ b/board/siemens/IAD210/atm.c
@@ -62,7 +62,7 @@
   volatile iop8xx_t      *iop    = &immap->im_ioport;
 
   timers->cpmt_tgcr &=  0x0FFF; SYNC;             /* Disable Timer 4 */
-  immap->im_cpm.cp_scc[4].scc_gsmrl = 0x0; SYNC; /* Disable SCC4 */
+  immap->im_cpm.cp_scc[3].scc_gsmrl = 0x0; SYNC; /* Disable SCC4 */
   iop->iop_pdpar &= 0x3FFF; SYNC;                 /* Disable SAR and UTOPIA */
 
   if ( atmMemInit() != OK ) return ERROR;
@@ -96,7 +96,7 @@
   volatile iop8xx_t      *iop    = &immap->im_ioport;
 
   timers->cpmt_tgcr &=  0x0FFF; SYNC;             /* Disable Timer 4 */
-  immap->im_cpm.cp_scc[4].scc_gsmrl = 0x0; SYNC;  /* Disable SCC4 */
+  immap->im_cpm.cp_scc[3].scc_gsmrl = 0x0; SYNC;  /* Disable SCC4 */
   iop->iop_pdpar &= 0x3FFF; SYNC;                 /* Disable SAR and UTOPIA */
   g_atm.loaded = FALSE;
 }