diff --git a/audio/csound/files/patch-Opcodes_OSC.c b/audio/csound/files/patch-Opcodes_OSC.c
new file mode 100644
index 000000000000..744ce92d1fb2
--- /dev/null
+++ b/audio/csound/files/patch-Opcodes_OSC.c
@@ -0,0 +1,20 @@
+--- Opcodes/OSC.c.orig	2020-08-13 23:03:03 UTC
++++ Opcodes/OSC.c
+@@ -477,7 +477,7 @@ static int32_t OSC_handler(const char *path, const cha
+ }
+ 
+ static int32_t OSC_handler(const char *path, const char *types,
+-                       lo_arg **argv, int32_t argc, void *data, void *p)
++                       lo_arg **argv, int argc, lo_message data, void *p)
+ {
+     IGN(argc);  IGN(data);
+     OSC_PORT  *pp = (OSC_PORT*) p;
+@@ -958,7 +958,7 @@ static int32_t OSC_ahandler(const char *path, const ch
+ /* ******** ARRAY VERSION **** EXPERIMENTAL *** */
+ 
+ static int32_t OSC_ahandler(const char *path, const char *types,
+-                       lo_arg **argv, int32_t argc, void *data, void *p)
++                       lo_arg **argv, int argc, lo_message data, void *p)
+ {
+     IGN(argc);  IGN(data);
+     OSC_PORT  *pp = (OSC_PORT*) p;