diff --git a/external/Makefile b/external/Makefile
index 725019576..9311b2c72 100644
--- a/external/Makefile
+++ b/external/Makefile
@@ -94,6 +94,7 @@ $(TARGET_DIR)/libwally-core-build/src/libwallycore.% $(TARGET_DIR)/libwally-core
 		--prefix=/ \
 		--libdir=/ \
 		--enable-debug \
+	&& cp src/secp256k1/src/libsecp256k1-config.h ../../libwally-core/src/secp256k1/src/libsecp256k1-config.h \
 	&& $(MAKE)
 
 # If we tell Make that the above builds both, it runs it twice in
diff --git a/external/libwally-core b/external/libwally-core
index 9f2f42df3..bb4cd3ac8 160000
--- a/external/libwally-core
+++ b/external/libwally-core
@@ -1 +1 @@
-Subproject commit 9f2f42df357f5b76d6273ab3165fb9ca671841d8
+Subproject commit bb4cd3ac802c7beb58f63307c5ed6ca116cf0dd0