diff --git a/test/install_script/nvm_check_global_modules b/test/install_script/nvm_check_global_modules
index c57d672..a526dcc 100755
--- a/test/install_script/nvm_check_global_modules
+++ b/test/install_script/nvm_check_global_modules
@@ -12,7 +12,7 @@
 }
 die () { echo $@ ; cleanup ; exit 1; }
 
-NVM_ENV=testing . ../../install.sh
+NVM_ENV=testing \. ../../install.sh
 
 setup () {
   ORIGINAL_PATH="$PATH"
diff --git a/test/install_script/nvm_detect_profile b/test/install_script/nvm_detect_profile
index 92da1d2..e5b71a8 100755
--- a/test/install_script/nvm_detect_profile
+++ b/test/install_script/nvm_detect_profile
@@ -2,7 +2,7 @@
 
 setup () {
   HOME="."
-  NVM_ENV=testing . ../../install.sh
+  NVM_ENV=testing \. ../../install.sh
   touch ".bashrc"
   touch ".bash_profile"
   touch ".zshrc"
diff --git a/test/install_script/nvm_do_install b/test/install_script/nvm_do_install
index a969602..8ced0eb 100755
--- a/test/install_script/nvm_do_install
+++ b/test/install_script/nvm_do_install
@@ -2,7 +2,7 @@
 
 die () { echo $@ ; exit 1; }
 
-NVM_ENV=testing . ../../install.sh
+NVM_ENV=testing \. ../../install.sh
 
 #nvm_do_install is available
 type nvm_do_install > /dev/null 2>&1 || die 'nvm_do_install is not available'
diff --git a/test/install_script/nvm_install_dir b/test/install_script/nvm_install_dir
index 8ce5a42..d6d1a42 100755
--- a/test/install_script/nvm_install_dir
+++ b/test/install_script/nvm_install_dir
@@ -6,7 +6,7 @@
 }
 die () { echo $@ ; cleanup ; exit 1; }
 
-NVM_ENV=testing . ../../install.sh
+NVM_ENV=testing \. ../../install.sh
 HOME="__home__"
 
 
diff --git a/test/install_script/nvm_reset b/test/install_script/nvm_reset
index bc86aa6..7eb9cd2 100755
--- a/test/install_script/nvm_reset
+++ b/test/install_script/nvm_reset
@@ -18,7 +18,7 @@
 ! safe_type nvm_reset || die 'nvm_reset is still available'
 ! safe_type nvm_detect_profile || die 'nvm_detect_profile is still available'
 
-NVM_ENV=testing . ../../install.sh
+NVM_ENV=testing \. ../../install.sh
 
 # Check nvm_reset exists
 safe_type nvm_reset || die 'nvm_reset is not available'
diff --git a/test/install_script/nvm_source b/test/install_script/nvm_source
index 8307639..977c9f4 100755
--- a/test/install_script/nvm_source
+++ b/test/install_script/nvm_source
@@ -6,7 +6,7 @@
 }
 die () { echo $@ ; cleanup ; exit 1; }
 
-NVM_ENV=testing . ../../install.sh
+NVM_ENV=testing \. ../../install.sh
 
 # nvm_source with no parameter returns the git endpoint
 echo $(nvm_source) | grep "nvm.git$" > /dev/null || die "nvm_source without arguments should return the location of the git repo"