diff --git a/target/imagebuilder/Makefile b/target/imagebuilder/Makefile
index 3d830bbc2d79a2f05ac99653678ac9a4d1aba4c7..d96a27674b8470d7a0d904db2b8b9e84852804ba 100644
--- a/target/imagebuilder/Makefile
+++ b/target/imagebuilder/Makefile
@@ -33,8 +33,8 @@ $(BIN_DIR)/$(IB_NAME).tar.bz2: clean
 	$(CP) $(TOPDIR)/target/linux/* $(IB_BUILD_DIR)/target/linux
 	rm -rf $(IB_BUILD_DIR)/target/linux/*/patches
 	-cp $(BUILD_DIR)/linux-$(KERNEL)-$(BOARD)/* $(IB_BUILD_DIR)/build_$(ARCH)/linux-$(KERNEL)-$(BOARD) # don't copy subdirectories here
-	find $(IB_BUILD_DIR) -name .svn -exec rm -rf {} \;
-	find $(IB_BUILD_DIR) -name CVS -exec rm -rf  {} \;
+	find $(IB_BUILD_DIR) -name .svn -exec rm -rf {} +
+	find $(IB_BUILD_DIR) -name CVS -exec rm -rf  {} +
 	(cd $(BUILD_DIR); \
 		tar cfj $@ $(IB_NAME); \
 	)
diff --git a/target/sdk/Makefile b/target/sdk/Makefile
index 3cae4b3842654d8ddc213f873b74071a220309ab..c0fc027cb488850f77ae848719c5d33ff08098d4 100644
--- a/target/sdk/Makefile
+++ b/target/sdk/Makefile
@@ -35,8 +35,8 @@ $(BIN_DIR)/$(SDK_NAME).tar.bz2: clean
 	$(CP) ./files/package/rules.mk $(SDK_BUILD_DIR)/package/
 	echo OPENWRTVERSION:=$(OPENWRTVERSION) > $(SDK_BUILD_DIR)/.version.mk
 	rm -rf $(SDK_BUILD_DIR)/staging_dir*/ccache
-	find $(SDK_BUILD_DIR) -name .svn -exec rm -rf {} \;
-	find $(SDK_BUILD_DIR) -name CVS -exec rm -rf  {} \;
+	find $(SDK_BUILD_DIR) -name .svn -exec rm -rf {} + 
+	find $(SDK_BUILD_DIR) -name CVS -exec rm -rf  {} +
 	(cd $(BUILD_DIR); \
 		tar cfj $@ $(SDK_NAME); \
 	)