diff --git a/conf/layer.conf b/conf/layer.conf
index efce51a..4fdd7ce 100644
--- a/conf/layer.conf
+++ b/conf/layer.conf
@@ -104,3 +104,7 @@ COMPATIBLE_HOST_pn-thunar-shares-plugin_riscv32 = "null"
 
 # sipe-mime.c:129:30: error: cast from 'GTypeInstance *' (aka 'struct _GTypeInstance *') to 'GMimeStreamFilter *' (aka 'struct _GMimeStreamFilter *') increases required al ignment from 4 to 8 [-Werror,-Wcast-align]
 COMPATIBLE_HOST_pn-pidgin-sipe_riscv32 = "null"
+
+# needs swapcontext/makecontext/getcontext which are
+# not yet implemented in linucontext for rv32
+COMPATIBLE_HOST_pn-capnproto_libc-musl_riscv32 = "null"