diff --git a/bin/pyenv-sh-activate b/bin/pyenv-sh-activate
index 6715e34..be76525 100755
--- a/bin/pyenv-sh-activate
+++ b/bin/pyenv-sh-activate
@@ -218,7 +218,7 @@ PYENV_VIRTUALENV_DISABLE_PROMPT="${PYENV_VIRTUALENV_DISABLE_PROMPT:-${VIRTUAL_EN
 if [ -z "${PYENV_VIRTUALENV_DISABLE_PROMPT}" ]; then
   case "${shell}" in
   fish )
-    echo "pyenv-virtualenv: prompt changing not work for fish." 1>&2
+    echo "pyenv-virtualenv: prompt changing not working for fish." 1>&2
     ;;
   * )
     echo "pyenv-virtualenv: prompt changing will be removed from future release. configure \`export PYENV_VIRTUALENV_DISABLE_PROMPT=1' to simulate the behavior." 1>&2
diff --git a/test/activate.bats b/test/activate.bats
index 4d2800b..5953265 100644
--- a/test/activate.bats
+++ b/test/activate.bats
@@ -116,7 +116,7 @@ deactivated
 pyenv-virtualenv: activate venv
 setenv PYENV_VIRTUAL_ENV "${PYENV_ROOT}/versions/venv";
 setenv VIRTUAL_ENV "${PYENV_ROOT}/versions/venv";
-pyenv-virtualenv: prompt changing not work for fish.
+pyenv-virtualenv: prompt changing not working for fish.
 EOS
 
   unstub pyenv-version-name
@@ -143,7 +143,7 @@ setenv PYENV_VERSION "venv";
 setenv PYENV_ACTIVATE_SHELL 1;
 setenv PYENV_VIRTUAL_ENV "${PYENV_ROOT}/versions/venv";
 setenv VIRTUAL_ENV "${PYENV_ROOT}/versions/venv";
-pyenv-virtualenv: prompt changing not work for fish.
+pyenv-virtualenv: prompt changing not working for fish.
 EOS
 
   unstub pyenv-version-name
@@ -223,7 +223,7 @@ setenv PYENV_VERSION "venv27";
 setenv PYENV_ACTIVATE_SHELL 1;
 setenv PYENV_VIRTUAL_ENV "${PYENV_ROOT}/versions/venv27";
 setenv VIRTUAL_ENV "${PYENV_ROOT}/versions/venv27";
-pyenv-virtualenv: prompt changing not work for fish.
+pyenv-virtualenv: prompt changing not working for fish.
 EOS
 
   unstub pyenv-virtualenv-prefix
@@ -248,7 +248,7 @@ setenv PYENV_VERSION "venv27";
 setenv PYENV_ACTIVATE_SHELL 1;
 setenv PYENV_VIRTUAL_ENV "${PYENV_ROOT}/versions/venv27";
 setenv VIRTUAL_ENV "${PYENV_ROOT}/versions/venv27";
-pyenv-virtualenv: prompt changing not work for fish.
+pyenv-virtualenv: prompt changing not working for fish.
 EOS
 
   unstub pyenv-virtualenv-prefix
diff --git a/test/conda-activate.bats b/test/conda-activate.bats
index 38e6ac2..8185a37 100644
--- a/test/conda-activate.bats
+++ b/test/conda-activate.bats
@@ -66,7 +66,7 @@ pyenv-virtualenv: activate anaconda-2.3.0
 setenv PYENV_VIRTUAL_ENV "${TMP}/pyenv/versions/anaconda-2.3.0";
 setenv VIRTUAL_ENV "${TMP}/pyenv/versions/anaconda-2.3.0";
 setenv CONDA_DEFAULT_ENV "root";
-pyenv-virtualenv: prompt changing not work for fish.
+pyenv-virtualenv: prompt changing not working for fish.
 EOS
 
   unstub pyenv-version-name