diff --git a/include/btstack/utils.h b/include/btstack/utils.h
index 960b1c294..6ee6a8563 100644
--- a/include/btstack/utils.h
+++ b/include/btstack/utils.h
@@ -100,3 +100,7 @@ uint8_t crc8_calc(uint8_t *data, uint16_t len);
 
 #define BD_ADDR_CMP(a,b) memcmp(a,b, BD_ADDR_LEN)
 #define BD_ADDR_COPY(dest,src) memcpy(dest,src,BD_ADDR_LEN)
+
+#ifdef EMBEDDED
+void bzero(void *s, uint32_t n);
+#endif
diff --git a/src/hci_cmds.c b/src/hci_cmds.c
index 3e4316fb6..6a0200201 100644
--- a/src/hci_cmds.c
+++ b/src/hci_cmds.c
@@ -41,6 +41,7 @@
 
 #include <btstack/sdp_util.h>
 #include "../config.h"
+#include <btstack/utils.h> // for bzero on embedded
 #include "hci.h"
 
 // calculate combined ogf/ocf value
diff --git a/src/utils.c b/src/utils.c
index 4449845f0..4595af5e2 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -176,3 +176,12 @@ uint8_t crc8_calc(uint8_t *data, uint16_t len)
     /* Ones complement */
     return 0xFF - crc8(data, len);
 }
+
+/*-----------------------------------------------------------------------------------*/
+// ad-hoc implemenation for embedded targets
+void bzero(void *s, uint32_t n){
+    uint8_t * data = (uint8_t *) s;
+    while (n--){
+        *data++ = 0;
+    }
+}