diff --git a/lib/hawk.h b/lib/hawk.h
index 9e454f39..054a9365 100644
--- a/lib/hawk.h
+++ b/lib/hawk.h
@@ -2760,8 +2760,8 @@ HAWK_EXPORT int hawk_rtx_truncrec (
  * is a nil value.
  */
 HAWK_EXPORT int hawk_rtx_isnilval (
-	hawk_rtx_t* rtx,
-	hawk_val_t* val
+	hawk_rtx_t*       rtx,
+	const hawk_val_t* val
 );
 
 /**
diff --git a/lib/mod-sys.c b/lib/mod-sys.c
index 81600370..bd8875bb 100644
--- a/lib/mod-sys.c
+++ b/lib/mod-sys.c
@@ -123,7 +123,8 @@ typedef enum syslog_type_t syslog_type_t;
 enum syslog_type_t
 {
 	SYSLOG_LOCAL,
-	SYSLOG_REMOTE
+	SYSLOG_DEVLOG,
+	SYSLOG_REMOTE,
 };
 
 struct mod_ctx_t
@@ -4605,8 +4606,14 @@ static int fnc_openlog (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	}
 	else if (hawk_comp_oocstr_limited(ident, HAWK_T("local://"), 8, 0) == 0)
 	{
-		/* "local://syslog-identifier" */
+		/* local://syslog-identifier */
 		actual_ident = ident + 8;
+	} 
+	else if (hawk_comp_oocstr_limited(ident, HAWK_T("devlog://"), 9, 0) == 0)
+	{
+		/* devlog://syslog-identifier */
+		actual_ident = ident + 9;
+		log_type = SYSLOG_DEVLOG;
 	}
 	else
 	{
diff --git a/lib/val.c b/lib/val.c
index e14f8376..fd637e3f 100644
--- a/lib/val.c
+++ b/lib/val.c
@@ -477,7 +477,7 @@ hawk_val_t* hawk_get_nil_val (void)
 	return (hawk_val_t*)&hawk_nil;
 }
 
-int hawk_rtx_isnilval (hawk_rtx_t* rtx, hawk_val_t* val)
+int hawk_rtx_isnilval (hawk_rtx_t* rtx, const hawk_val_t* val)
 {
 	return val == (hawk_val_t*)&hawk_nil || (HAWK_VTR_IS_POINTER(val) && val->v_type == HAWK_VAL_NIL);
 }
diff --git a/mod/mod-mysql.c b/mod/mod-mysql.c
index 3ffe948e..700b41cc 100644
--- a/mod/mod-mysql.c
+++ b/mod/mod-mysql.c
@@ -360,7 +360,7 @@ BEGIN {
 		print "stmt preparation error - ", mysql::errmsg();
 	}
 
-	result = mysql::stmt_execute(stmt, "%hawk%");
+	result = mysql::stmt_execute(stmt, mysql::TYPE_STR, "%hawk%");
 	if (result <= -1)
 	{
 		print "statement execution error - ", mysql::errmsg();