diff --git a/board/atc/atc.c b/board/atc/atc.c
index 79527f438420b5c9b7321dbbeba4442d032cedef..b627c1c6bc6b07ea0a7b688fb6e5bcac84919c54 100644
--- a/board/atc/atc.c
+++ b/board/atc/atc.c
@@ -380,7 +380,6 @@ phys_size_t initdram (int board_type)
 }
 
 #if defined(CONFIG_CMD_DOC)
-extern void doc_probe (ulong physadr);
 void doc_init (void)
 {
 	doc_probe (CFG_DOC_BASE);
diff --git a/board/cpu86/cpu86.c b/board/cpu86/cpu86.c
index 9e76c72d3e3631ff8140f016974361511965239a..23ec283d4ff796172595539127b7b8b81aeb1704 100644
--- a/board/cpu86/cpu86.c
+++ b/board/cpu86/cpu86.c
@@ -313,7 +313,6 @@ phys_size_t initdram (int board_type)
 }
 
 #if defined(CONFIG_CMD_DOC)
-extern void doc_probe (ulong physadr);
 void doc_init (void)
 {
 	doc_probe (CFG_DOC_BASE);
diff --git a/board/cpu87/cpu87.c b/board/cpu87/cpu87.c
index 454987cff299599e26c9eaa80a7b4b033b64796b..c7a96f9131bbf382609607842322b36095db469d 100644
--- a/board/cpu87/cpu87.c
+++ b/board/cpu87/cpu87.c
@@ -323,7 +323,6 @@ phys_size_t initdram (int board_type)
 }
 
 #if defined(CONFIG_CMD_DOC)
-extern void doc_probe (ulong physadr);
 void doc_init (void)
 {
 	doc_probe (CFG_DOC_BASE);
diff --git a/board/gen860t/gen860t.c b/board/gen860t/gen860t.c
index e3d0e435d466ae8f8d58b5b7b4967842f6b2d53e..5c497b62a3433a5fd96354e2afdd0fe42e9706ce 100644
--- a/board/gen860t/gen860t.c
+++ b/board/gen860t/gen860t.c
@@ -223,8 +223,6 @@ phys_size_t initdram (int board_type)
  * The DOC lives in the CS2* space
  */
 #if defined(CONFIG_CMD_DOC)
-extern void doc_probe (ulong physadr);
-
 void doc_init (void)
 {
 	printf ("Probing at 0x%.8x: ", DOC_BASE);
diff --git a/board/mcc200/mcc200.c b/board/mcc200/mcc200.c
index 77ee3d7ed72cbbff27fffb83971f6c52ebbc394d..44446501f94b05c4184fee986d510cfd85f1842c 100644
--- a/board/mcc200/mcc200.c
+++ b/board/mcc200/mcc200.c
@@ -323,7 +323,6 @@ void ide_set_reset (int idereset)
 #endif
 
 #if defined(CONFIG_CMD_DOC)
-extern void doc_probe (ulong physadr);
 void doc_init (void)
 {
 	doc_probe (CFG_DOC_BASE);
diff --git a/board/mpl/common/common_util.c b/board/mpl/common/common_util.c
index 24ce807857413d3a7eda718396ab9717290b597c..1f9a7726f16287a746d62b8027516cf29be9a8d6 100644
--- a/board/mpl/common/common_util.c
+++ b/board/mpl/common/common_util.c
@@ -565,7 +565,6 @@ int do_mplcommon(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 
 
 #if defined(CONFIG_CMD_DOC)
-extern void doc_probe(ulong physadr);
 void doc_init (void)
 {
   doc_probe(MULTI_PURPOSE_SOCKET_ADDR);
diff --git a/board/pm520/pm520.c b/board/pm520/pm520.c
index a9d63cc35ad36bb436b5fbdf889f5c6133e63c18..6db93fbb4f3afe6f2205364ff5e769dcced6efee 100644
--- a/board/pm520/pm520.c
+++ b/board/pm520/pm520.c
@@ -316,7 +316,6 @@ void ide_set_reset (int idereset)
 #endif
 
 #if defined(CONFIG_CMD_DOC)
-extern void doc_probe (ulong physadr);
 void doc_init (void)
 {
 	doc_probe (CFG_DOC_BASE);
diff --git a/board/pm826/pm826.c b/board/pm826/pm826.c
index d8b0929cf48038c67f3f4677cbcf841719ac8439..2304420a886910acf34662ee9d97bc1de8bbacf1 100644
--- a/board/pm826/pm826.c
+++ b/board/pm826/pm826.c
@@ -312,7 +312,6 @@ phys_size_t initdram (int board_type)
 }
 
 #if defined(CONFIG_CMD_DOC)
-extern void doc_probe (ulong physadr);
 void doc_init (void)
 {
 	doc_probe (CFG_DOC_BASE);
diff --git a/board/pm828/pm828.c b/board/pm828/pm828.c
index b163d5b35d3895b1ced84a7f120f8e69673b579e..296a199336dc0d1abee42f20023b9aa11410794e 100644
--- a/board/pm828/pm828.c
+++ b/board/pm828/pm828.c
@@ -345,7 +345,6 @@ phys_size_t initdram (int board_type)
 }
 
 #if defined(CONFIG_CMD_DOC)
-extern void doc_probe (ulong physadr);
 void doc_init (void)
 {
 	doc_probe (CFG_DOC_BASE);
diff --git a/board/svm_sc8xx/svm_sc8xx.c b/board/svm_sc8xx/svm_sc8xx.c
index 06fb18b344c88cddb222d26160ce4f4638e71dfc..48e05b83f760ef37738722f4ee5322d68aef325c 100644
--- a/board/svm_sc8xx/svm_sc8xx.c
+++ b/board/svm_sc8xx/svm_sc8xx.c
@@ -154,7 +154,6 @@ phys_size_t initdram (int board_type)
 }
 
 #if defined(CONFIG_CMD_DOC)
-extern void doc_probe (ulong physadr);
 void doc_init (void)
 {
 	        doc_probe (CFG_DOC_BASE);