diff --git a/port/ez430-rf2560/btstack_config.h b/port/ez430-rf2560/btstack_config.h
index ecc0bc147..ef8643f19 100644
--- a/port/ez430-rf2560/btstack_config.h
+++ b/port/ez430-rf2560/btstack_config.h
@@ -16,6 +16,7 @@
 // #define ENABLE_LOG_ERROR
 // #define ENABLE_LOG_INFO 
 // #define ENABLE_EHCILL
+#define ENABLE_SCO_OVER_HCI
 
 // BTstack configuration. buffers, sizes, ...
 #define HCI_ACL_PAYLOAD_SIZE 52
diff --git a/port/max32630-fthr/src/btstack_config.h b/port/max32630-fthr/src/btstack_config.h
index 77308f7cd..e9d09d7b0 100644
--- a/port/max32630-fthr/src/btstack_config.h
+++ b/port/max32630-fthr/src/btstack_config.h
@@ -20,6 +20,7 @@
 //#define ENABLE_LOG_DEBUG
 #define ENABLE_LE_SECURE_CONNECTIONS
 #define ENABLE_MICRO_ECC_FOR_LE_SECURE_CONNECTIONS
+#define ENABLE_SCO_OVER_HCI
 
 // BTstack configuration. buffers, sizes, ...
 #define HCI_ACL_PAYLOAD_SIZE 1021
diff --git a/port/msp-exp430f5438-cc2564b/btstack_config.h b/port/msp-exp430f5438-cc2564b/btstack_config.h
index d17443c4a..04cabc5ea 100644
--- a/port/msp-exp430f5438-cc2564b/btstack_config.h
+++ b/port/msp-exp430f5438-cc2564b/btstack_config.h
@@ -16,6 +16,7 @@
 // #define ENABLE_LOG_ERROR
 // #define ENABLE_LOG_INFO 
 // #define ENABLE_EHCILL
+#define ENABLE_SCO_OVER_HCI
 
 // BTstack configuration. buffers, sizes, ...
 #define HCI_ACL_PAYLOAD_SIZE 52
diff --git a/port/msp430f5229lp-cc2564b/btstack_config.h b/port/msp430f5229lp-cc2564b/btstack_config.h
index 68b522856..af7412d13 100644
--- a/port/msp430f5229lp-cc2564b/btstack_config.h
+++ b/port/msp430f5229lp-cc2564b/btstack_config.h
@@ -16,6 +16,7 @@
 // #define ENABLE_LOG_ERROR
 // #define ENABLE_LOG_INFO 
 // #define ENABLE_EHCILL
+#define ENABLE_SCO_OVER_HCI
 
 // BTstack configuration. buffers, sizes, ...
 #define HCI_ACL_PAYLOAD_SIZE 52
diff --git a/port/stm32-f103rb-nucleo/btstack_config.h b/port/stm32-f103rb-nucleo/btstack_config.h
index 5f46cac7e..2b9413c96 100644
--- a/port/stm32-f103rb-nucleo/btstack_config.h
+++ b/port/stm32-f103rb-nucleo/btstack_config.h
@@ -16,6 +16,7 @@
 // #define ENABLE_LOG_INFO 
 // #define ENABLE_LOG_ERROR
 // #define ENABLE_EHCILL
+#define ENABLE_SCO_OVER_HCI
 
 // BTstack configuration. buffers, sizes, ...
 #define HCI_ACL_PAYLOAD_SIZE 52
@@ -36,4 +37,4 @@
 #define MAX_NR_SERVICE_RECORD_ITEMS 1
 #define MAX_NR_LE_DEVICE_DB_ENTRIES 1
 
-#endif
\ No newline at end of file
+#endif
diff --git a/port/stm32-f4discovery-cc256x/src/btstack_config.h b/port/stm32-f4discovery-cc256x/src/btstack_config.h
index 96f3bfff4..cb1a2962a 100644
--- a/port/stm32-f4discovery-cc256x/src/btstack_config.h
+++ b/port/stm32-f4discovery-cc256x/src/btstack_config.h
@@ -17,6 +17,7 @@
 #define ENABLE_LE_DATA_CHANNELS
 // #define ENABLE_LOG_INFO
 #define ENABLE_LOG_ERROR
+#define ENABLE_SCO_OVER_HCI
 #define ENABLE_CC256X_BAUDRATE_CHANGE_FLOWCONTROL_BUG_WORKAROUND
 // #define ENABLE_EHCILL
 // #define ENABLE_SEGGER_RTT