diff --git a/test/conda-prefix.bats b/test/conda-prefix.bats
index 6965d52..4c2436a 100644
--- a/test/conda-prefix.bats
+++ b/test/conda-prefix.bats
@@ -9,7 +9,6 @@ setup() {
 @test "display conda root" {
   setup_conda "anaconda-2.3.0"
   stub pyenv-version-name "echo anaconda-2.3.0"
-  stub pyenv-prefix "anaconda-2.3.0 : echo \"${PYENV_ROOT}/versions/anaconda-2.3.0\""
 
   PYENV_VERSION="anaconda-2.3.0" run pyenv-virtualenv-prefix
 
@@ -19,14 +18,12 @@ ${PYENV_ROOT}/versions/anaconda-2.3.0
 OUT
 
   unstub pyenv-version-name
-  unstub pyenv-prefix
   teardown_conda "anaconda-2.3.0"
 }
 
 @test "display conda env" {
   setup_conda "anaconda-2.3.0" "foo"
   stub pyenv-version-name "echo anaconda-2.3.0/envs/foo"
-  stub pyenv-prefix "anaconda-2.3.0/envs/foo : echo \"${PYENV_ROOT}/versions/anaconda-2.3.0/envs/foo\""
 
   PYENV_VERSION="anaconda-2.3.0/envs/foo" run pyenv-virtualenv-prefix
 
@@ -36,6 +33,5 @@ ${PYENV_ROOT}/versions/anaconda-2.3.0/envs/foo
 OUT
 
   unstub pyenv-version-name
-  unstub pyenv-prefix
   teardown_conda "anaconda-2.3.0" "foo"
 }
diff --git a/test/prefix.bats b/test/prefix.bats
index a21c3f9..7a1d50f 100644
--- a/test/prefix.bats
+++ b/test/prefix.bats
@@ -72,7 +72,6 @@ remove_conda() {
 
 @test "display prefix of virtualenv created by virtualenv" {
   stub pyenv-version-name "echo foo"
-  stub pyenv-prefix "foo : echo \"${PYENV_ROOT}/versions/foo\""
   create_virtualenv "foo" "2.7.11"
 
   PYENV_VERSION="foo" run pyenv-virtualenv-prefix
@@ -83,13 +82,11 @@ ${PYENV_ROOT}/versions/2.7.11
 OUT
 
   unstub pyenv-version-name
-  unstub pyenv-prefix
   remove_virtualenv "foo" "2.7.11"
 }
 
 @test "display prefix of virtualenv created by virtualenv (pypy)" {
   stub pyenv-version-name "echo foo"
-  stub pyenv-prefix "foo : echo \"${PYENV_ROOT}/versions/foo\""
   create_virtualenv_pypy "foo" "pypy-4.0.1"
 
   PYENV_VERSION="foo" run pyenv-virtualenv-prefix
@@ -100,13 +97,11 @@ ${PYENV_ROOT}/versions/pypy-4.0.1
 OUT
 
   unstub pyenv-version-name
-  unstub pyenv-prefix
   remove_virtualenv "foo" "pypy-4.0.1"
 }
 
 @test "display prefix of virtualenv created by virtualenv (jython)" {
   stub pyenv-version-name "echo foo"
-  stub pyenv-prefix "foo : echo \"${PYENV_ROOT}/versions/foo\""
   create_virtualenv_jython "foo" "jython-2.7.0"
 
   PYENV_VERSION="foo" run pyenv-virtualenv-prefix
@@ -117,14 +112,11 @@ ${PYENV_ROOT}/versions/jython-2.7.0
 OUT
 
   unstub pyenv-version-name
-  unstub pyenv-prefix
   remove_virtualenv "foo" "jython-2.7.0"
 }
 
 @test "display prefixes of virtualenv created by virtualenv" {
   stub pyenv-version-name "echo foo:bar"
-  stub pyenv-prefix "foo : echo \"${PYENV_ROOT}/versions/foo\"" \
-                    "bar : echo \"${PYENV_ROOT}/versions/bar\""
   create_virtualenv "foo" "2.7.11"
   create_virtualenv "bar" "3.5.1"
 
@@ -136,14 +128,12 @@ ${PYENV_ROOT}/versions/2.7.11:${PYENV_ROOT}/versions/3.5.1
 OUT
 
   unstub pyenv-version-name
-  unstub pyenv-prefix
   remove_virtualenv "foo" "2.7.11"
   remove_virtualenv "bar" "3.5.1"
 }
 
 @test "display prefix of virtualenv created by venv" {
   stub pyenv-version-name "echo foo"
-  stub pyenv-prefix "foo : echo \"${PYENV_ROOT}/versions/foo\""
   create_m_venv "foo" "3.3.6"
 
   PYENV_VERSION="foo" run pyenv-virtualenv-prefix
@@ -154,14 +144,11 @@ ${PYENV_ROOT}/versions/3.3.6
 OUT
 
   unstub pyenv-version-name
-  unstub pyenv-prefix
   remove_m_venv "foo" "3.3.6"
 }
 
 @test "display prefixes of virtualenv created by venv" {
   stub pyenv-version-name "echo foo:bar"
-  stub pyenv-prefix "foo : echo \"${PYENV_ROOT}/versions/foo\"" \
-                    "bar : echo \"${PYENV_ROOT}/versions/bar\""
   create_m_venv "foo" "3.3.6"
   create_m_venv "bar" "3.4.4"
 
@@ -173,14 +160,12 @@ ${PYENV_ROOT}/versions/3.3.6:${PYENV_ROOT}/versions/3.4.4
 OUT
 
   unstub pyenv-version-name
-  unstub pyenv-prefix
   remove_m_venv "foo" "3.3.6"
   remove_m_venv "bar" "3.4.4"
 }
 
 @test "display prefix of virtualenv created by conda" {
   stub pyenv-version-name "echo miniconda3-3.16.0/envs/foo"
-  stub pyenv-prefix "miniconda3-3.16.0/envs/foo : echo \"${PYENV_ROOT}/versions/miniconda3-3.16.0/envs/foo\""
   create_conda "miniconda3-3.16.0/envs/foo" "miniconda3-3.16.0"
 
   PYENV_VERSION="miniconda3-3.16.0/envs/foo" run pyenv-virtualenv-prefix
@@ -191,7 +176,6 @@ ${PYENV_ROOT}/versions/miniconda3-3.16.0/envs/foo
 OUT
 
   unstub pyenv-version-name
-  unstub pyenv-prefix
   remove_conda "miniconda3-3.16.0/envs/foo" "miniconda3-3.16.0"
 }
 
@@ -210,7 +194,6 @@ OUT
 
 @test "should fail if the version is not a virtualenv" {
   stub pyenv-version-name "echo 3.4.4"
-  stub pyenv-prefix "3.4.4 : echo \"${PYENV_ROOT}/versions/3.4.4\""
   create_version "3.4.4"
 
   PYENV_VERSION="3.4.4" run pyenv-virtualenv-prefix
@@ -221,14 +204,11 @@ pyenv-virtualenv: version \`3.4.4' is not a virtualenv
 OUT
 
   unstub pyenv-version-name
-  unstub pyenv-prefix
   remove_version "3.4.4"
 }
 
 @test "should fail if one of the versions is not a virtualenv" {
   stub pyenv-version-name "echo venv33:3.4.4"
-  stub pyenv-prefix "venv33 : echo \"${PYENV_ROOT}/versions/venv33\"" \
-                    "3.4.4 : echo \"${PYENV_ROOT}/versions/3.4.4\""
   create_virtualenv "venv33" "3.3.6"
   create_version "3.4.4"
 
@@ -240,7 +220,6 @@ pyenv-virtualenv: version \`3.4.4' is not a virtualenv
 OUT
 
   unstub pyenv-version-name
-  unstub pyenv-prefix
   remove_virtualenv "venv33" "3.3.6"
   remove_version "3.4.4"
 }