diff --git a/packages/seafile-client/build.sh b/packages/seafile-client/build.sh
index 20eb9ba6e..01196a03a 100644
--- a/packages/seafile-client/build.sh
+++ b/packages/seafile-client/build.sh
@@ -11,6 +11,7 @@ TERMUX_PKG_BUILD_IN_SRC=true
 
 termux_step_pre_configure() {
 	./autogen.sh
+	export CPPFLAGS="-I$TERMUX_PKG_SRCDIR/lib $CPPFLAGS"
 }
 
 termux_step_post_configure() {