diff --git a/software/common/validation/apb_mux_tests.c b/software/common/validation/apb_mux_tests.c
index 3bc6266b08043d44a092d2b3d7ec88d854634cd5..95d6997fed5b53a6e76d86a1a2d9de077bce5ee2 100644
--- a/software/common/validation/apb_mux_tests.c
+++ b/software/common/validation/apb_mux_tests.c
@@ -124,14 +124,14 @@ int main (void)
     if ( ID_Check(&blank_id[0],         0x4000A000          ) == 1 ) err_code |= 1<<10;
   puts ("11: APB test slave");
     if ( APB_test_slave_Check(          0x4000B000          ) == 1 ) err_code |= 1<<11;
-  puts ("12: DMAC 1 (Not Implemented) - Slave Error");
-    if ( ID_Check(&blank_id[0],         0x4000C000          ) == 1 ) err_code |= 1<<12;
+  //puts ("12: DMAC 1 (Not Implemented) - Slave Error");
+  //  if ( ID_Check(&blank_id[0],         0x4000C000          ) == 1 ) err_code |= 1<<12;
   puts ("13: blank - default slave (generates slave error)");
     if ( ID_Check(&blank_id[0],         0x4000D000          ) == 1 ) err_code |= 1<<13;
   puts ("14: Debug USRT");
     if ( ID_Check(&apb_uart_id[0],      CMSDK_USRT2_BASE    ) == 1 ) err_code |= 1<<14;
-  puts ("15: DMAC 0 (PL230)");
-    if ( ID_Check(&pl230_udma_id[0],    CMSDK_PL230_BASE    ) == 1 ) err_code |= 1<<15;
+  //puts ("15: DMAC 0 (PL230)");
+  //  if ( ID_Check(&pl230_udma_id[0],    CMSDK_PL230_BASE    ) == 1 ) err_code |= 1<<15;
 
 
   /* Report error code */