diff --git a/prepare.py b/prepare.py
index ac9fdfc30..178750eb8 100755
--- a/prepare.py
+++ b/prepare.py
@@ -337,7 +337,7 @@ clean: $(addprefix clean-,$(packages))
 
 veryclean: $(addprefix veryclean-,$(packages))
 
-libs: $(addprefix all-,$(archs))
+lipo:
 	archives=`find liblinphone-sdk/{first_arch}-apple-darwin.ios -name *.a` && \\
 	mkdir -p liblinphone-sdk/apple-darwin && \\
 	cp -rf liblinphone-sdk/{first_arch}-apple-darwin.ios/include liblinphone-sdk/apple-darwin/. && \\
@@ -367,6 +367,8 @@ libs: $(addprefix all-,$(archs))
 		fi \\
 	done
 
+libs: $(addprefix all-,$(archs)) lipo
+
 ipa: build
 	xcodebuild -configuration Release \\
 	&& xcrun -sdk iphoneos PackageApplication -v build/Release-iphoneos/linphone.app -o linphone-iphone.ipa