diff --git a/submodules/build/builder-iphone-os.mk b/submodules/build/builder-iphone-os.mk
index aec3b5e58..65dcdfce4 100644
--- a/submodules/build/builder-iphone-os.mk
+++ b/submodules/build/builder-iphone-os.mk
@@ -220,7 +220,7 @@ build-msilbc: build-libilbc $(MSILBC_BUILD_DIR)/Makefile
 	cd $(MSILBC_BUILD_DIR) && make  && make install
 
 clean-msilbc:
-	cd  $(MSILBC_BUILD_DIR) && make clean
+	cd  $(MSILBC_BUILD_DIR) && make -f clean
 
 veryclean-msilbc:
 	cd $(MSILBC_BUILD_DIR) && make distclean