diff --git a/libs/classpath/Makefile b/libs/classpath/Makefile
index 480b887d3..273678e1e 100644
--- a/libs/classpath/Makefile
+++ b/libs/classpath/Makefile
@@ -51,6 +51,7 @@ endef
 $(eval $(call Download,antlr))
 
 CONFIGURE_ARGS += \
+	--with-gmp="$(STAGING_DIR)/usr" \
 	--without-x \
 	--disable-gtk-peer \
 	--disable-qt-peer \