diff --git a/.travis.yml b/.travis.yml
index ee0ed9f..9886236 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -48,4 +48,4 @@ script:
   - fish test/wrapper.fish
   - fish test/reinitialize.fish
   - bash -c "source \"${HOME}/.sdkman/bin/sdkman-init.sh\" && sdk install crash 1.3.0 && sdk uninstall crash 1.3.0" && fish test/10_zombies_new.fish
-  - bash -c "rm -rf \"${HOME}/.sdkman\" &&  sed -i 's/^.*\(sdkman\|SDKMAN\).*$//g' \"${HOME}/.bashrc\" && echo 'SDKMAN uninstalled'" && fish -c "echo 'y' | sdk" && fish -c "sdk version"
+  - bash -c "rm -rf \"${HOME}/.sdkman\" &&  sed -i'.bak' -e 's/^.*\(sdkman\|SDKMAN\).*$//g' \"${HOME}/.bashrc\" && echo 'SDKMAN uninstalled'" && fish -c "echo 'y' | sdk" && fish -c "sdk version"