diff --git a/channels/chan_misdn.c b/channels/chan_misdn.c
index e5d63f39181218335d3c15e3bd59ed57c6f5648f..4ae62e3219b405dde36f106b650208b8c74300c2 100644
--- a/channels/chan_misdn.c
+++ b/channels/chan_misdn.c
@@ -223,7 +223,7 @@ static struct robin_list *robin = NULL;
 
 
 
-struct ast_frame *process_ast_dsp(struct chan_list *tmp, struct ast_frame *frame);
+static struct ast_frame *process_ast_dsp(struct chan_list *tmp, struct ast_frame *frame);
 
 
 
@@ -2376,7 +2376,7 @@ static int misdn_hangup(struct ast_channel *ast)
 }
 
 
-struct ast_frame *process_ast_dsp(struct chan_list *tmp, struct ast_frame *frame)
+static struct ast_frame *process_ast_dsp(struct chan_list *tmp, struct ast_frame *frame)
 {
 	struct ast_frame *f,*f2;
  
diff --git a/channels/chan_zap.c b/channels/chan_zap.c
index 303b52015e6291ee038632ff4b6f72d76ac5f657..b2b43c583c6b4efb24c5c62d41fa473a115fa2ad 100644
--- a/channels/chan_zap.c
+++ b/channels/chan_zap.c
@@ -701,9 +701,9 @@ static int zt_sendtext(struct ast_channel *c, const char *text);
 static int zt_call(struct ast_channel *ast, char *rdest, int timeout);
 static int zt_hangup(struct ast_channel *ast);
 static int zt_answer(struct ast_channel *ast);
-struct ast_frame *zt_read(struct ast_channel *ast);
+static struct ast_frame *zt_read(struct ast_channel *ast);
 static int zt_write(struct ast_channel *ast, struct ast_frame *frame);
-struct ast_frame *zt_exception(struct ast_channel *ast);
+static struct ast_frame *zt_exception(struct ast_channel *ast);
 static int zt_indicate(struct ast_channel *chan, int condition, const void *data, size_t datalen);
 static int zt_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
 static int zt_setoption(struct ast_channel *chan, int option, void *data, int datalen);
@@ -4516,7 +4516,7 @@ static struct ast_frame *__zt_exception(struct ast_channel *ast)
 	return f;
 }
 
-struct ast_frame *zt_exception(struct ast_channel *ast)
+static struct ast_frame *zt_exception(struct ast_channel *ast)
 {
 	struct zt_pvt *p = ast->tech_pvt;
 	struct ast_frame *f;
@@ -4526,7 +4526,7 @@ struct ast_frame *zt_exception(struct ast_channel *ast)
 	return f;
 }
 
-struct ast_frame  *zt_read(struct ast_channel *ast)
+static struct ast_frame  *zt_read(struct ast_channel *ast)
 {
 	struct zt_pvt *p = ast->tech_pvt;
 	int res;