diff --git a/plugins/python-build/bin/pyenv-install b/plugins/python-build/bin/pyenv-install
index f9ee37ec..22333f6e 100755
--- a/plugins/python-build/bin/pyenv-install
+++ b/plugins/python-build/bin/pyenv-install
@@ -160,7 +160,7 @@ if [ -d "${PREFIX}/bin" ]; then
     read -p "continue with installation? (y/N) "
 
     case "$REPLY" in
-    y* | Y* ) ;;
+    y | Y | yes | YES ) ;;
     * ) exit 1 ;;
     esac
   elif [ -n "$SKIP_EXISTING" ]; then
diff --git a/plugins/python-build/bin/pyenv-uninstall b/plugins/python-build/bin/pyenv-uninstall
index 1730e861..91805454 100755
--- a/plugins/python-build/bin/pyenv-uninstall
+++ b/plugins/python-build/bin/pyenv-uninstall
@@ -71,7 +71,7 @@ if [ -z "$FORCE" ]; then
 
   read -p "pyenv: remove $PREFIX? "
   case "$REPLY" in
-  y* | Y* ) ;;
+  y | Y | yes | YES ) ;;
   * ) exit 1 ;;
   esac
 fi